Dropping from Two Naps to One
Medically reviewed by Dr. Sarah Chen, MD, FAAP · Board-Certified Pediatrician
Content reviewed against published AAP, NSF guidelines
Last reviewed:
Sleep concerns affect nearly every family at some point. When it comes to dropping from two naps to one, here is what the guidelines recommend.
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.
Key takeaways
- 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.
- Usually normal when: Your toddler is cranky in the late afternoon during the transition and needs a slightly earlier bedtime
- Call your doctor if: Your child is so overtired they are having frequent accidents, falls, or are unable to eat or function normally
- Varies by age — see the age-by-age breakdown below
“To reduce the risk of sleep-related infant deaths, the AAP recommends that infants sleep on their backs, on a firm, flat surface, without any soft bedding.”
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What Parents Should Know
According to AAP, NSF guidelines, 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. At 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. It is generally considered normal when your toddler is cranky in the late afternoon during the transition and needs a slightly earlier bedtime. However, you should contact your pediatrician promptly if your child is so overtired they are having frequent accidents, falls, or are unable to eat or function normally.
Normal vs. Concerning
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 to Tell Your Pediatrician
- Describe when you first noticed dropping from two naps to one and how it has changed over time.
- Note your baby's current age and which age-specific patterns you are seeing.
- Mention if your child seems chronically overtired for more than a month despite your best efforts to adjust the schedule.
- Mention if your toddler stops napping entirely before age 2 and seems exhausted.
- Bring a list of any questions or observations you want to discuss at the appointment.
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
What You Can Do at Home
- Keep track of when you notice dropping from two naps to one — noting the time of day, duration, and any triggers can help your pediatrician.
- Remember that your toddler is cranky in the late afternoon during the transition and needs a slightly earlier bedtime — this is generally within the range of normal.
- At 10-12 months, focus on observation rather than intervention unless your pediatrician advises otherwise.
- Maintain a consistent bedtime routine. Keep the sleep environment cool, dark, and quiet.
- While monitoring at home, seek immediate care if your child is so overtired they are having frequent accidents, falls, or are unable to eat or function normally.
Related Resources
Baby Sleep Guide
Age-by-age sleep needs, schedules, and evidence-based sleep strategies.
Month-by-Month Development
Detailed monthly development guides from birth through 24 months.
When to Call the Doctor
General guide on when to call the pediatrician, visit urgent care, or go to the ER.
Frequently asked questions
Is dropping from two naps to one normal?
When should I call the doctor about dropping from two naps to one?
When is dropping from two naps to one normal?
What causes dropping from two naps to one?
What should I mention to my pediatrician about dropping from two naps to one?
Is dropping from two naps to one normal at 10-12 months?
Is dropping from two naps to one normal at 12-15 months?
Should I go to the ER for dropping from two naps to one?
Does dropping from two naps to one go away on its own?
References
Doctor Visit Checklist
Bring this checklist to your next pediatrician visit to discuss Dropping from Two Naps to One.
Things to mention
- Describe when you first noticed dropping from two naps to one and how it has changed over time.
- Note your baby's current age and which age-specific patterns you are seeing.
- Mention if your child seems chronically overtired for more than a month despite your best efforts to adjust the schedule.
- Mention if your toddler stops napping entirely before age 2 and seems exhausted.
- Bring a list of any questions or observations you want to discuss at the appointment.
Observations to share
- 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
Urgent signs to report immediately
- 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
My notes
From ismybabyalright.com — free, evidence-based baby health guides
All content follows our editorial policy and is reviewed against published clinical guidelines.
2,705 evidence-based guides6 authoritative medical sources5 medical advisory board members
Related Resources
Bottom line
Most cases of dropping from two naps to one are normal. Talk to your pediatrician if your child is so overtired they are having frequent accidents, falls, or are unable to eat or function normally.
Trust your instincts. If something feels wrong, reach out to your pediatrician. Worrying about your baby means you care — that is a good thing.
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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.
Is It Dangerous for My Baby to Sleep in a Car Seat?
Babies should not be left to sleep in car seats outside of the car. Car seat-related deaths are most often caused by positional asphyxia, which occurs when a baby's head falls forward, compressing the airway. While car seats are essential and safe for travel, the AAP recommends transferring your sleeping baby to a firm, flat sleep surface as soon as you reach your destination. Never use a car seat as a substitute for a crib or bassinet.