Five months is usually a three-nap day. Wake windows are comfortably over two hours, naps consolidate into longer blocks, and the day starts to look predictable enough that a clock schedule is genuinely useful rather than aspirational.
Wake at 7:00 AM, 3 naps of about 1 h 10 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 | 9:00–10:10 AM | 2 h awake first |
| Nap 2 | 12:10–1:20 PM | 2 h awake first |
| Nap 3 | 3:35–4:45 PM | 2 h 15 min awake first |
| Bedtime | 7:00 PM | 2 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 3.5 h of daytime sleep and 12 h overnight — 15.5 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.
Somewhere between five and eight months the third nap goes. The signal is the third nap refusing to happen or pushing bedtime late, not a date on the calendar.
Three is typical, four if the naps are short. The Tier-1 range for 3–5 months is 3–5 naps.
A 30–45 minute nap is one sleep cycle. It is extremely common at this age and usually resolves as sleep pressure and the circadian rhythm mature. Short naps mean you need more of them; shorten the following wake window rather than pushing through.
Bedtime is set by the last wake window, not by the clock. Take the end of the last nap, add the age-appropriate window, and that is bedtime — which is why it moves on a bad nap day.
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.