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"At eight months, the morning nap just stopped." "Dropping from two naps to one sent the late afternoon into chaos." "At daycare they still nap; at home they won't." "Every morning: 5 a.m."
Nap transitions are among the most opaque sleep changes in early childhood. The timing varies widely between children, and nothing you did caused the transition to happen — or to stall. This article maps the nap transition timeline and the structure behind early morning waking.
The Nap Transition Roadmap
Galland et al.'s 2012 systematic review synthesized 34 observational studies on infant and toddler sleep patterns and outlined a normative sequence [1]. These are medians; individual variation is wide.
Three naps to two (approximately 3–6 months) The evening catnap is typically the first to go. The fragmented sleep of the newborn period consolidates into a more established two-nap pattern.
Morning nap disappears (median around 6–10 months, but the range is broad) The morning nap shortens, then resistance begins, then it fades naturally — usually across two to four weeks. This transition rarely happens in a single day.
Two naps to one (median around 12–18 months) This transition tends to produce the most prolonged instability. "Managed one nap today," "back to two tomorrow" — the back-and-forth can last several weeks. Iglowstein et al.'s longitudinal data show that about 68% of children aged 3–5 still nap, declining to around 50% by age five [2], which illustrates how wide the range of nap cessation timing is.
Complete cessation (range: ages 3–5) Full nap cessation spans a range from age three to five. Napping rates at age three are around 50%; by age five, 20–30% [2]. The timeline at daycare and at home often diverges during this period.
What is common to each transition period: a temporary shift to earlier bedtimes, increased night waking, and worsening of early morning waking. This is not a sign that something has gone wrong. It reflects physiological rhythm reorganization — the sleep system recalibrating during a transition.
The Structure of Early Morning Waking
"Every morning at 5 a.m." "Can't sleep past 5:45." Price et al.'s Australian longitudinal study found that regular early waking (before 6 a.m.) occurs in approximately 25–30% of children aged 1–3 [3].
Two main structural patterns underlie early morning waking.
Sleep pressure shift (linked to nap length or bedtime) If a nap runs too long, or bedtime is too early, the accumulated sleep pressure: the drive to sleep that builds up the longer a person stays awake, also called homeostatic sleep drive is exhausted before morning, and the child wakes early. This can often be addressed by shifting bedtime 20–30 minutes later; when the result is waking 20–30 minutes later, this confirms the sleep pressure pattern and opens a practical path forward.
Circadian phase advance: a biological shift in the internal clock so sleep onset and wake time occur earlier than average (an early chronotype) Some children are biologically early risers — both sleep onset and wake time fall early. In this case, adjusting bedtime alone does not fully resolve the waking. Akacem et al.'s research on circadian phase: the timing position of a person's internal biological clock relative to the external day-night cycle during the nap transition period showed a relationship between early chronotype: an individual's natural tendency toward earlier or later sleep-wake timing driven by biology and nap cessation timing in toddlers [4].
The most useful way to distinguish "sleep-pressure early waking" from "biological early waking" is to record bedtime and wake time for seven consecutive days. If shifting bedtime 30 minutes later consistently produces a 30-minute-later wake time, it is likely a sleep-pressure issue that can be managed. If the wake time does not shift, the child may simply be an early riser by biology.
Daycare and Home Nap Discrepancy
"They nap at daycare but won't nap at home" — or the reverse — is common and worth normalizing.
At daycare and preschool, a structured group routine, a darkened room with minimal stimulation, and a consistent time create conditions that support napping. At home, higher stimulation levels and less formal structure can work against it.
From around age three to four, a common problem is that daytime naps at daycare run late enough to push bedtime significantly later. One option in that situation is to cap nap length at 60–75 minutes, or to fix the nap end time before 1–2 p.m. — though this usually requires a conversation with the childcare setting.
Practical Takeaways
1. Build in a one- to two-week transition window During the two-to-one nap transition, plan to move bedtime 30–45 minutes earlier for the first one to two weeks to compensate with nighttime sleep. Once the transition stabilizes, bedtime can return to its usual time. Viewing the fussiness of those weeks as physiological recalibration, rather than failure, makes it easier to stay the course.
2. Record bedtime and wake time, then adjust Seven days of recording bedtime and wake time makes the sleep-pressure pattern visible. Try shifting bedtime 20–30 minutes later and observe whether wake time shifts accordingly.
3. Manage nap length and end time If nighttime sleep is being delayed by more than an hour, the first adjustment to try is capping nap duration (60–75 minutes maximum) or fixing a nap-end time in the early afternoon.
Summary
Nap transitions follow a predictable timeline, but individual variation and the turbulence of each transition are substantial. Much early morning waking can be addressed by adjusting bedtime and nap patterns, though some children are biologically early risers. Tracking the pattern is the first step toward identifying which situation you are dealing with.
References
- Galland BC, Taylor BJ, Elder DE, Herbison P. Normal sleep patterns in infants and children: a systematic review of observational studies. Sleep Med Rev. 2012;16(3):213–222. doi:10.1016/j.smrv.2011.06.001. PMID: 21784676.
- Iglowstein I, Jenni OG, Molinari L, Largo RH. Sleep duration from infancy to adolescence: reference values and generational trends. Pediatrics. 2003;111(2):302–307. doi:10.1542/peds.111.2.302. PMID: 12563055.
- Price AM, Brown JE, Bittman M, Wake M, Quach J, Hiscock H. Children's sleep patterns from 0 to 9 years: Australian population longitudinal study. Arch Dis Child. 2014;99(2):119–125. doi:10.1136/archdischild-2013-304828. PMID: 24060734.
- Akacem LD, Simpkin CT, Carskadon MA, et al. The timing of the circadian clock and sleep differ between napping and non-napping toddlers. PLoS One. 2015;10(4):e0125181. doi:10.1371/journal.pone.0125181. PMID: 25893978.
- Kurdziel L, Duclos K, Spencer RM. Sleep spindles in midday naps enhance learning in preschool children. Proc Natl Acad Sci U S A. 2013;110(43):17267–17272. doi:10.1073/pnas.1306418110. PMID: 24082087.