Dropping from Two Naps to One
The short answer
Most babies transition from two naps to one between 12-18 months. Signs include consistently fighting or skipping the second nap, taking very long to fall asleep for naps, or bedtime becoming a battle. The transition usually takes 2-4 weeks and some crankiness is normal during the adjustment.
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By Age
What to expect by age
10-12 months
Some babies flirt with dropping a nap around 10-12 months, but this is usually a false alarm caused by a developmental leap or the 12-month sleep regression. Most babies still need two naps at this age. If your baby occasionally refuses a nap, try offering it a bit later rather than dropping it entirely.
12-15 months
This is the most common window for the 2-to-1 transition. Signs your baby is ready include: consistently fighting the second nap for 2 or more weeks, taking a long time to fall asleep at bedtime, or the second nap pushing bedtime too late. Start by gradually pushing the morning nap later by 15-30 minutes every few days until it lands around 12:30-1pm.
15-18 months
If your baby is still on two naps and doing well, that is perfectly fine. Every child is different. However, if you are seeing consistent nap resistance, short second naps, or very late bedtimes, it is likely time to consolidate. The single nap should eventually land between 12:30-2:30pm for most toddlers.
18+ months
By 18 months, most toddlers have fully transitioned to one nap. This single nap is usually 1.5-3 hours long. If your toddler is still struggling, ensure the nap is well-timed (not too early, not too late) and that bedtime moves earlier if needed. Some toddlers need a 6:30pm bedtime during the transition.
What Should You Do?
When to take action
- Your toddler is cranky in the late afternoon during the transition and needs a slightly earlier bedtime
- Some days your child takes two naps and other days just one during the transition period
- The transition takes 2-4 weeks with some bumpy days
- Your child occasionally falls asleep in the car or stroller in the late afternoon during adjustment
- Bedtime moves temporarily earlier to compensate for lost daytime sleep
- Your child seems chronically overtired for more than a month despite your best efforts to adjust the schedule
- Your toddler stops napping entirely before age 2 and seems exhausted
- Your child is so overtired they are having frequent accidents, falls, or are unable to eat or function normally
- Extreme mood changes or developmental regression that you suspect is related to severe sleep deprivation
Sources
Related Resources
Trust your instincts. If something feels wrong, reach out to your pediatrician.
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Related Sleep Concerns
How Long Should Baby Be Awake Between Naps?
The ideal awake time between naps (called a "wake window") increases as your baby grows. Newborns may only handle 45-90 minutes awake, while toddlers can manage 4-6 hours. Getting wake windows right is one of the most effective ways to improve nap quality, because both too-short and too-long wake times lead to poor sleep.
Is a Bath Before Bed Really Necessary?
A nightly bath is not medically necessary and some babies with sensitive skin do better with less frequent bathing. However, a warm bath can be a powerful sleep cue because the subsequent body temperature drop triggers melatonin production. If you include a bath, keep it calm and warm rather than stimulating.
How Long Should the Bedtime Routine Be?
An ideal bedtime routine for babies and toddlers is 20-30 minutes. Shorter routines may not give enough time to wind down, while routines longer than 45 minutes can become a stalling tactic. Consistency in the routine order matters more than exact length.
Is My Baby's Bedtime Too Early?
For most babies over 3 months, bedtime between 6:00-8:00 PM is appropriate. A bedtime that is too early can cause early morning wakings (before 6 AM) or long periods of wakefulness in the middle of the night. However, during nap transitions or on days when naps were short, an earlier-than-usual bedtime helps prevent overtiredness.
Is My Baby's Bedtime Too Late?
For babies over 3-4 months, consistently going to bed after 8:30-9:00 PM may result in overtiredness, which paradoxically makes it harder to fall asleep and stay asleep. Cortisol rises when babies are overtired, leading to more night wakings and early mornings. Moving bedtime earlier, even by 15-30 minutes, often improves overnight sleep quality.
Baby Only Napping 30 Minutes
Short naps of 30-45 minutes are extremely common in babies under 6 months. Your baby is waking at the end of a single sleep cycle and has not yet learned to link cycles together during the day. This is developmentally normal and typically improves on its own between 5-7 months as the brain matures.