Naps and wake windows

What a "wake window" really means

A wake window is the time your baby is awake between one sleep and the next. You'll find charts everywhere with exact minutes for every month. None of those numbers has been measured in a study. They're rules of thumb. There's a real idea underneath them, though: babies build up sleep pressure while they're awake, and they build it faster the younger they are.

Chickpea treats awake time as a starting guess:

• For the first weeks it uses typical figures for your baby's age.
• As you log sleep, it shifts toward your baby's own pattern, weighting the most recent days most. Within a few days, the window you see is mostly your baby's.
• Many babies manage a shorter stretch in the morning and a longer one before bed. Chickpea allows for that, but your baby's data decides.

Sleepy cues beat the clock. If your baby is yawning, rubbing their eyes, staring off or fussing well before the window, go with the cues. If they're happy and alert at the end of the window, you can often wait a little.

Short naps

• Under about 5–6 months, 30–45-minute naps are very common and usually lengthen as sleep matures. Nothing needs fixing.
• Older babies: if most naps are short for a week or more, try moving the awake time before naps by 10–15 minutes, either longer or shorter, for about 3 days, and see what happens. Too little sleep pressure and too much can both cut a nap short.
• A dim room and the same short pre-nap routine (diaper, sleep sack, song) can help.
• After a short nap, your baby may be ready for the next sleep a bit sooner than the window shows. Watch their cues.

Naps on the go, in arms and in the car

• Contact naps are fine while an awake adult is holding your baby. If you start getting sleepy yourself, move your baby to their own flat, empty sleep space.
• Car seats, strollers, swings and bouncers aren't made for routine sleep. If your baby falls asleep in one, move them to a firm, flat sleep surface when you can (AAP 2022). In the car seat on a drive, that's once you arrive.
• Mixing some naps at home with some on the go is fine. Many families keep the first nap at home and let later ones happen wherever.

Nap transitions

Babies drop naps one at a time, and it rarely happens cleanly. Expect a stretch of mixed days, when some days need the old number of naps and some the new. An earlier bedtime (by 30–60 minutes) on the days with fewer naps is the most useful single tool through every transition.

Chickpea watches for a change in nap count across several complete days. It tells you when a transition may be starting, never from one or two odd days.

4 → 3 naps (common practice puts this around 4–6 months)

• Signs: the fourth nap keeps getting refused or runs into bedtime, and awake times of 1½–2 hours no longer seem tiring enough.
• How it usually goes: awake times stretch a little over a week or two, and the last short nap disappears. Some days still need four naps.

3 → 2 naps (usually around 6–9 months)

• Signs: the late-afternoon nap is refused or pushes bedtime late, and night sleep gets shorter or bedtime becomes a battle.
• How it usually goes: both naps drift later, the third becomes an optional short catnap, then it goes. Bedtime moves earlier on two-nap days.
• Babies average about 2 naps a day at 6–11 months (Galland 2012), with a wide range.

2 → 1 nap (usually between about 15 and 24 months, with some starting around 12–14 months)

• A nap strike around 12 months is often temporary. Two naps are still typical to 12–15 months. Before deciding the nap's gone, offer it for another week or two.
• Signs it's real: for a week or more, one nap is consistently refused or very short, or the second nap pushes bedtime late and night sleep suffers.
• How it usually goes: the morning nap moves later, toward midday, often a little each day. Bedtime comes earlier for a few weeks while your toddler adjusts. On rough days a short second nap or an extra-early bedtime is fine.
• Most children have settled on one nap by 15–24 months (Weissbluth 1995).

1 → 0 naps (usually from about 3 years)

• Very few children (under 2.5%) stop napping before their second birthday (Staton 2020). About 87% of 2-year-olds still nap (Iglowstein 2003).
• Signs: your child regularly lies awake through naptime, or naps push bedtime very late, and they cope well without it.
• How it usually goes: first the nap gets shorter, then it happens on some days and not others. Keep a quiet-time rest in the afternoon, and move bedtime earlier on no-nap days.