Ten months is the age where the morning nap starts to get unreliable for some babies — often the first hint of a nap transition that is still months away. Two naps and roughly three hours of daytime sleep is still the expectation.
Wake at 7:00 AM, 2 naps of about 1 h 15 min each, bedtime at 7:00 PM. Nap times are windows, not deadlines — anywhere inside one counts.
| Part of the day | Clock time | Notes |
|---|---|---|
| Wake | 7:00 AM | |
| Nap 1 | 10:00–11:15 AM | 3 h awake first |
| Nap 2 | 2:30–3:45 PM | 3 h 15 min awake first |
| Bedtime | 7:00 PM | 3 h 15 min awake first |
The planner adjusts it to your baby's own wake time, bedtime, and birthday — including corrected age if your baby was born early.
The sample day above lands at 2.5 h of daytime sleep and 12 h overnight — 14.5 h in 24. A baby at the bottom of the range who wakes up happy is not short on sleep; the range is wide because babies are.
A short-lived "nap strike" around 10–11 months is common and usually passes within a couple of weeks. Dropping to one nap this early generally backfires: the day gets too long and bedtime turns into a fight.
Usually a temporary strike tied to a developmental burst — standing, cruising, first words. Hold the two-nap shape, shorten the first window slightly if the refusal continues, and give it two weeks before concluding anything.
Two naps totalling 2–3 hours. A single long midday nap with a short morning one is also normal — the total is what the guidance ranges are about.
About 3–3.5 hours. The Tier-1 bracket for 9–11 months is 150–210 minutes.
Tier 1 — evidence-based The ranges on this page are the consensus sleep totals and nap counts below. The phrase "wake window" itself is a Tier 2 practice-based heuristic: it does not appear in the pediatric sleep-medicine literature, so treat the window lengths as a starting estimate and let your baby's sleepy cues override them.