The 3→2 nap transition is the second nap drop and, for most families, the easiest — because the nap being dropped is a 30–45 minute catnap whose only job was protecting bedtime. It happens between 7 and 9 months for most babies, once wake windows reach about 2.5–3 hours and the two main naps have lengthened enough to carry the day.
The trap is dropping it too early. A 6-month-old who refuses the catnap for three days is usually teething, sick, or overtired — not ready. The signs below are about consistency, not one bad afternoon.
Making the switch
- Week 1–2: stretch, don't drop. Push the first two wake windows out by 15 minutes every few days until the second nap ends around 3–3:30 PM. Keep offering the catnap; let it be refused.
- Use bedtime as the shock absorber. On a no-catnap day, bedtime moves to 6:30–7 PM. That is not "too early"; it is the whole mechanism.
- Expect mixed weeks. Two-nap days and three-nap days will alternate for two to three weeks. Both are correct on the day they happen.
- Cap the catnap when it does happen at 30 minutes, ending by 4:30 PM, so it never eats the night.
Transition or a bad week?
A real transition shows up as a pattern: the catnap is fought most days for two weeks, while the first two naps are solid and the baby is cheerful through longer windows. A bad week shows up as everything being worse at once — short naps, early waking, night waking — usually with a cause (a tooth, a cold, a trip, a leap). If naps 1 and 2 are also falling apart, it is not the transition; hold the three-nap day, shorten wake windows slightly, and revisit in a week or two.
The new 2-nap shape
Once the catnap is gone the day settles into a recognizable pattern that will last until 13–18 months: a morning nap about 2.5–3 hours after waking, a longer afternoon nap about 3 hours after that, and a final wake window of 3–3.5 hours to a 7–7:30 PM bedtime. The afternoon nap becomes the important one; over the coming months it grows while the morning nap slowly shrinks, which is the setup for the next transition.
Before and after: sample days
Before: the 3-nap day (6–7 months)
After: the 2-nap day (8–9 months)
Sample days assume a 7:00 AM wake-up. Customize for your baby's wake time →
Transitions are messy.
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