Sleep Milestones & Nap Transitions
Every real stage of baby sleep, from the first exhausting weeks home through the last nap fading out around age four. Pick where you are (or where you're headed) below. Each stage links directly, so you can bookmark or send just the part that's relevant right now. Every stage below also lists age-appropriate wind-down ideas, and you can pair them with the app's free wind-down reminders, which nudge you before the predicted bedtime or nap with a rotating idea for that stage.
#newborn-0-2-weeksThe First Two Weeks
There is no schedule yet, and there isn't supposed to be one. A newborn sleeps a genuinely huge amount (14 to 17 hours across a full day), but almost none of it comes in a stretch longer than 2 to 4 hours, day or night, because their stomach is tiny and they need to feed constantly to keep up with growth.
What's actually happening
Newborns haven't developed a circadian rhythm yet. The internal clock that eventually tells the body "it's nighttime, stay asleep" doesn't really start switching on until 6 to 9 weeks. Until then, sleep is driven almost entirely by hunger and tiny sleep-pressure cycles, completely indifferent to the actual time on the clock.
What you might notice
- Waking to feed roughly every 2 to 3 hours, including overnight, without exception
- No real difference yet between a 2am stretch and a 2pm stretch
- Sleep that looks messy and unpredictable no matter what you try
What tends to help
Nothing to fix here. This stage is about survival, not schedule-building. The one thing worth starting early: exposing them to bright natural light during the day and keeping nights dim and quiet, since that's the input their body will eventually use to build a real day/night rhythm.
Logging every feed and wake time from day one, even though it looks chaotic now, gives the Insights tab real history to work with the moment patterns actually start forming.
- Dim the lights and turn on white noise
- Swaddle (or sleep sack) and a few minutes of gentle rocking
- Quiet cuddle time with soft humming or a lullaby
- A gentle infant massage with lotion
- A slow, quiet last feed away from the sleep space
Weeks 2 to 6: The Witching Hour Arrives
Feeding every 2 to 3 hours is still the norm through this stretch, but somewhere around week 2 or 3 a new, very specific kind of fussiness tends to show up in the evenings, often called the "witching hour," even though it can easily run longer than an hour.
What's actually happening
Nobody has a fully settled explanation for why evening fussiness clusters the way it does, but it's extremely common and not a sign anything is wrong. One working theory: by evening, a newborn has simply hit their limit on the day's overstimulation, and fussiness is the release valve.
What you might notice
- A predictable fussy stretch, often late afternoon into evening
- Harder-to-settle periods that don't respond to the usual feed-or-sleep fixes
- Sleep still scattered in 2-4 hour pieces around the clock otherwise
What tends to help
Motion (a carrier, a walk, gentle bouncing) and a calmer, lower-stimulation environment in the hour or two before the usual fussy window both tend to take the edge off. This phase is temporary. Most families see it ease by 8 to 10 weeks as the nervous system matures.
Tag rough evenings. It lets you see later, in Insights, exactly when the witching-hour stretch actually faded for them instead of relying on memory.
- Dim the lights and turn on white noise
- Swaddle (or sleep sack) and a few minutes of gentle rocking
- Quiet cuddle time with soft humming or a lullaby
- A gentle infant massage with lotion
- A slow, quiet last feed away from the sleep space
Weeks 6 to 8: The First Real Rhythm
Somewhere in this window, most babies start producing their own melatonin for the first time. That's the hormone that eventually drives a real sleep-wake rhythm. It doesn't flip on all at once, but this is usually the first stretch where nights start to gently pull ahead of days.
What's actually happening
Before this, melatonin came entirely from mom during pregnancy and breastfeeding; their own production is just starting to ramp up. It's the earliest biological groundwork for a day/night rhythm, even though a real schedule is still a couple of months away.
What you might notice
- One nighttime stretch occasionally running a bit longer than the rest (4 to 5 hours instead of 2 to 3)
- Still frequent daytime feeding and short naps
- More alert, engaged awake periods than the first few weeks
What tends to help
Keep leaning on the same light exposure habits from the first weeks: bright and active during the day, dim and quiet overnight. It's a small input, but it's reinforcing exactly the rhythm that's just starting to switch on internally.
Once one nightly stretch starts consistently outlasting the others, the overnight sleep chart in Insights will start showing it as a real trend, not just a lucky night.
- Dim the lights and turn on white noise
- Swaddle (or sleep sack) and a few minutes of gentle rocking
- Quiet cuddle time with soft humming or a lullaby
- A gentle infant massage with lotion
- A slow, quiet last feed away from the sleep space
3 Months: Sleep Starts Consolidating
By 3 months, the day/night rhythm that started around 6 to 8 weeks is usually noticeably stronger. Nights are consolidating into longer stretches, and naps, while still unpredictable, are starting to fall into rough patterns rather than firing at completely random times.
What's actually happening
Melatonin production and the internal clock are both maturing quickly now. This is also the calm before a real storm: the well-known 4-month regression is usually just a few weeks out, driven by another, bigger jump in how sleep cycles themselves work.
What you might notice
- Longer nighttime stretches becoming more consistent, sometimes 5+ hours
- Naps starting to loosely cluster at similar times of day
- Still plenty of day-to-day variation, this isn't a fixed schedule yet
What tends to help
This is a reasonable point to start a simple, consistent bedtime routine if you haven't already: a bath, a book, the same few steps in the same order every night. It won't lock in a schedule on its own, but it gives their nervous system a reliable cue that night is starting.
This is exactly the data the Explore tab's nap-transition and sleep-window personalization needs. The more real naps and nights logged now, the sooner suggestions stop being generic age-based guesses.
- Bath time
- A short infant massage after the bath
- A lullaby while rocking
- A high-contrast board book together
- Gentle leg-bicycle stretches in dim light
The 4-Month Sleep Regression
Of every regression on the list, this is the one with the most real science behind it, and also the one most likely to stick around in some form, since it's tied to a permanent shift in how sleep works, not a passing phase.
What's actually happening
Around 4 months, sleep cycles mature from the simpler newborn pattern into the same multi-stage cycle adults use. That means your baby now briefly surfaces to a lighter sleep stage several times a night, the same way you do. Newborns mostly slept through those transitions without noticing; a 4-month-old is much more likely to fully wake up during one.
What you might notice
- More frequent night wake-ups, even if sleep had been going well before
- More difficulty resettling without help
- Naps getting shorter or choppier too
What tends to help
This is a genuinely good moment to start building independent sleep skills, since the underlying sleep architecture has permanently changed. A consistent bedtime routine and putting them down drowsy-but-awake, if you haven't already, tend to pay off more here than at any earlier age.
The overnight sleep chart in Insights makes it easy to see whether night wakings are actually trending up right now, or whether it just feels that way after a couple of rough nights.
- Bath time
- A short infant massage after the bath
- A lullaby while rocking
- A high-contrast board book together
- Gentle leg-bicycle stretches in dim light
The 6-Month Sleep Regression
Right around 6 months, a lot of babies are learning to roll over, sit up, or scoot, and that new physical ability doesn't clock out at bedtime. It's common for a baby to practice rolling in the crib in the middle of the night, sometimes waking themselves up in the process.
What's actually happening
New motor skills are exciting and a little compulsive at this age. Babies often "practice" a new movement whenever they're not fully asleep, crib included. That practicing itself can be what's interrupting sleep, more than any change in actual sleep need.
What you might notice
- More rolling, scooting, or repositioning overnight
- Waking up stuck in a new position and needing help resettling
- Extra practice/fussing right at the start of naps or bedtime
What tends to help
Plenty of rolling and movement practice during awake, daytime hours seems to reduce the overnight version of it. This phase is usually one of the shorter regressions. Most families see it settle within a couple of weeks as the new skill stops being novel.
Tag nights as "Regression" in the sleep log so you can look back later and see exactly how long this particular phase actually lasted for Daria.
- Bath time
- 2-3 board books together
- Peekaboo or a quiet clapping game in dim light
- A "goodnight tour" waving to toys, the window, pets
- A gentle back rub in the crib
The 4-to-3 Nap Transition
Somewhere around 5 to 6 months, a lot of babies who've been running on four short naps a day start pushing back on that last one. It's usually one of the first real nap transitions parents hit, and it can feel confusing because the schedule that worked for months suddenly doesn't.
What's actually happening
Wake windows are stretching. A 6-month-old can typically stay awake longer between naps than a newborn could, which means four short naps start to not fit into the day anymore. That fourth one gets pushed later and later until it either disappears or turns into a token 15-minute catnap.
What you might notice
- The 4th nap getting shorter, later, or skipped entirely
- Bedtime getting harder on days the 4th nap didn't happen
- The first three naps still going fine
What tends to help
Stretch wake windows gradually rather than dropping the nap cold. A few extra minutes awake before each of the remaining naps, spread across a week or two, usually eases the transition better than an abrupt schedule change.
The Explore tab's nap-transition analysis looks at your own kid's recent nap pattern, not just their age, to tell you whether a transition looks like it's actually underway.
- Bath time
- 2-3 board books together
- Peekaboo or a quiet clapping game in dim light
- A "goodnight tour" waving to toys, the window, pets
- A gentle back rub in the crib
The 8-10 Month Sleep Regression
This is often the loudest regression on the list, because two things tend to collide at once: a burst of new mobility (crawling, pulling up, sometimes cruising), and the emergence of real separation anxiety.
What's actually happening
Object permanence is developing. Your baby now understands you still exist even when you're not in the room, which is a cognitive win but also means bedtime can suddenly feel like an actual loss instead of just a nap. Layer new mobility on top (the urge to practice standing at 2am is real), and nights get busy.
What you might notice
- New or worse protest at bedtime or when you leave the room
- Standing up in the crib and not knowing how to get back down
- More night wakings that seem to need reassurance, not just resettling
What tends to help
Short, calm reassurance rather than a full pick-up tends to work better here. You want to confirm you're still there without turning every wake-up into a longer interaction than it needs to be. Practicing standing and getting back down during awake time also helps a lot.
The Insights tab's average bedtime and wake-up trend can show you whether this is settling into a pattern or actually easing, useful reassurance when a rough week feels endless in the moment.
- Bath time
- 2-3 board books together
- Peekaboo or a quiet clapping game in dim light
- A "goodnight tour" waving to toys, the window, pets
- A gentle back rub in the crib
The 3-to-2 Nap Transition
This is the transition that gets confused with the 4-to-3 one constantly, since they can happen in a similar age window. The tell isn't the exact age. It's which nap is actually falling apart.
What's actually happening
By 7 to 8 months, most babies can handle noticeably longer stretches of awake time. The middle or last of three naps is usually the one that starts getting hard to protect, since it's competing with a wake window that's now longer than the schedule assumes.
What you might notice
- One specific nap (often the last) consistently shrinking or disappearing
- The other two naps staying strong and easy to fall asleep for
- A rough, overtired bedtime on days the third nap didn't happen
What tends to help
An earlier bedtime on the days the third nap gets skipped goes a long way. It covers the extra awake time without forcing an overtired kid to fight through a late bedtime on top of it.
The nap-transition analysis in Explore reads your kid's actual recent naps and no-nap days, not a fixed age, and gives you a plain-language call on what's happening.
- Bath time
- 2-3 board books together
- Peekaboo or a quiet clapping game in dim light
- A "goodnight tour" waving to toys, the window, pets
- A gentle back rub in the crib
The 12-Month Sleep Regression
Right around the first birthday, a lot of toddlers are either walking or right on the edge of it, plus picking up new words and sounds fast. All that new capability doesn't switch off just because it's 7pm.
What's actually happening
Big motor and language leaps tend to come with genuine excess energy and a strong urge to practice the new skill, which is exactly what a crib at bedtime is not built for. It's also common for this to coincide with a nap needing to shift, which compounds things.
What you might notice
- More activity, standing, or "performing" at bedtime instead of settling
- A later, harder-won bedtime than usual
- New babbling or word attempts happening instead of falling asleep
What tends to help
Extra active, physical playtime earlier in the day helps burn off some of that new-skill energy well before bedtime arrives. A slightly longer wind-down routine than usual also gives the excitement more time to settle before lights out.
If nap timing feels off too, the Explore tab's nap-transition analysis can tell you whether the 2-to-1 nap transition is arriving around the same time. The two often overlap.
- Bath time
- Brushing teeth together as part of the ritual
- Picking one book to read together
- A goodnight walk saying goodnight to favorite toys and rooms
- Choosing a stuffed animal or lovey for bed
- A quiet cuddle talking about the day
The 2-to-1 Nap Transition
Parents consistently rank this one as the toughest nap transition, and for good reason: going from two naps to one is a much bigger jump in wake-window length than any of the earlier transitions, and it tends to arrive right alongside toddler independence and opinions.
What's actually happening
Somewhere between 15 and 18 months, the morning nap starts eating into the afternoon nap, either pushing it too late to matter, or making it disappear into a short catnap that doesn't actually help. Total daytime sleep need hasn't dropped much yet, it's just consolidating into one longer nap instead of two shorter ones.
What you might notice
- The morning nap getting shorter or fought while the afternoon nap stays fine
- A stretch of days where neither nap goes well, before one finally wins out
- A noticeably crankier, more overtired kid during the in-between weeks
What tends to help
Pushing the morning wake-up and nap start later, in small increments, is usually gentler than an abrupt switch to one midday nap. Most kids need a couple of weeks to adjust to the longer single wake window either way.
This is exactly the pattern the Explore tab's nap-transition analysis is built to catch early, so you're not stuck guessing whether it's a rough week or the real thing.
- Bath time
- Brushing teeth together as part of the ritual
- Picking one book to read together
- A goodnight walk saying goodnight to favorite toys and rooms
- Choosing a stuffed animal or lovey for bed
- A quiet cuddle talking about the day
The 18-Month Sleep Regression
Eighteen months is peak "I have opinions now," and bedtime is one of the first places those opinions show up. This regression is less about a single developmental leap and more about several things stacking at once: independence, communication, and (often) the 2-to-1 nap transition all arriving in the same few months.
What's actually happening
Toddlers this age understand a lot more than they can say, which is a recipe for frustration when bedtime doesn't go the way they want it to. Add in a nap schedule that may genuinely be shifting underneath the resistance, and it's easy to mistake "real transition" for "just being 18 months."
What you might notice
- New bedtime protest, stalling, or requests ("water," "up," "one more")
- Nap resistance that may or may not be a real 2-to-1 transition
- Increased desire to do bedtime "myself"
What tends to help
Offering small, real choices within the routine ("this book or that one," "which pajamas") gives some of that independence an outlet without turning the whole routine into a negotiation. A consistent, predictable sequence matters more here than almost any other age.
If nap resistance is part of what's going on, the 2-to-1 nap transition analysis in Explore can tell you whether that's genuinely underway or a separate thing entirely.
- Bath time
- Brushing teeth together as part of the ritual
- Picking one book to read together
- A goodnight walk saying goodnight to favorite toys and rooms
- Choosing a stuffed animal or lovey for bed
- A quiet cuddle talking about the day
The 2-Year Sleep Regression
The 2-year mark tends to bring a grab-bag of changes rather than one clean cause: potty training might be starting, new fears (the dark, being alone, specific sounds) can show up for the first time, and the last nap may be starting to wobble too.
What's actually happening
Imagination is developing quickly at this age, which is wonderful during the day and occasionally rough at bedtime. A 2-year-old can now genuinely believe in a fear that wasn't bothering them a few months ago. Combine that with whatever else is shifting (potty training, napping) and sleep can feel like it's regressing on multiple fronts.
What you might notice
- New requests for a nightlight, door open, or extra reassurance
- Night wakings tied to potty training (real or requested)
- Nap resistance that may or may not be the real thing yet
What tends to help
Taking a new fear seriously (a nightlight, a reassuring phrase, checking the closet together) tends to resolve it faster than dismissing it. If naps are also part of the picture, it's worth checking whether that's a genuine transition before changing the schedule.
The Potty Training hub tracks real dryness streaks so you can see if nighttime potty training specifically is what's driving the disruption, separate from everything else going on at this age.
- Bath time
- Picking 1-2 books for story time
- "Best part of the day" chat
- 5 minutes of quiet coloring before the bath
- Practicing deep breaths: "smell the flower, blow out the candle"
- Picking out tomorrow's clothes together
- Animal-pose stretches (cat, dog, starfish)
Dropping the Last Nap
Of all the nap transitions, this is the one that most often gets rushed. Somewhere around 2, kids start occasionally fighting or skipping their one remaining nap, and it's tempting to read that as "done with naps." Most of the time, it isn't yet.
What's actually happening
The average age kids fully drop their nap is closer to 3 to 4 years old, even though occasional nap resistance often starts showing up a year or more before that. An inconsistent nap around age 2 to 2.5 is much more often a phase than the actual end of napping.
What you might notice
- Nap resistance that comes and goes, rather than a clean, permanent stop
- Quiet, non-napping days followed by days they still fall asleep easily
- Overtiredness or a rough bedtime on the days the nap gets skipped
What tends to help
"Quiet time," a set period of calm, low-stimulation downtime with no pressure to actually fall asleep, is a solid middle step. It protects some of the recharge naps give without forcing a fight on the days sleep genuinely isn't happening.
The Explore tab's nap-transition analysis tracks the real pattern of nap-vs-no-nap days over time, so you can tell a genuine transition apart from a rough week or two.
- Bath time
- Picking 1-2 books for story time
- "Best part of the day" chat
- 5 minutes of quiet coloring before the bath
- Practicing deep breaths: "smell the flower, blow out the candle"
- Picking out tomorrow's clothes together
- Animal-pose stretches (cat, dog, starfish)
Get a nudge before the wind-down window opens
Free wind-down reminders fire before your kid's own predicted bedtime or next nap, with an age-appropriate idea each time: story time, a bath, quiet stretches, and more, rotating so it never feels like the same notification. Turn it on in Settings.
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