When Should Siblings Start Sharing a Room?

When a second child arrives in a two-bedroom apartment or home, room sharing becomes a necessity. However, pediatricians and safe sleep experts recommend waiting before combining a newborn and a toddler into the same bedroom.

The American Academy of Pediatrics strongly advises that infants sleep in the parents' room on a separate sleep surface for at least the first six months of life, when the risk of sleep-related infant death is highest. Review our detailed analysis of room sharing vs bed sharing safety.

Sibling Room Sharing by Age Phase
Age StageRoom ArrangementKey Sleep Priority
0 to 6 MonthsNewborn in parents' room; toddler in own roomFrequent night feeds without disturbing toddler
6 to 12 MonthsTransition baby into shared toddler bedroomStaggered bedtimes; adjust white noise masking
1 to 3 YearsBoth siblings fully adjusted to shared roomReinforcing safe boundaries and morning wake rules

Staggered Bedtime Logistics

Putting two children to sleep at the exact same minute in a single room often invites giggling, toy throwing, or mutual meltdowns. A staggered bedtime routine creates structure:

  1. Put the toddler down first: If your toddler takes longer to wind down, complete their bedtime routine at 7:00 PM while your partner or baby monitor handles the infant in another room.
  2. Or put the infant down first: If the infant sleeps early (e.g. 6:30 PM), settle the baby in the dark shared room first, then bring the quiet toddler in later for a whispered tuck-in.
  3. Position sound masking strategically: Place your sound machine between the crib and toddler bed. Check safe decibel levels in our guide on {lk('en', 'white-noise-volume-for-baby', 'safe white noise volume for babies')}.

Protecting the Infant Crib from Toddler Curiosity

Curious toddlers love to share blankets, heavy stuffed animals, or cookies with their new baby brother or sister. In a nursery, this loving impulse can pose grave suffocation risks:

  • Choose a high-walled crib: Ensure the infant sleeps in a standard rigid crib that a toddler cannot easily reach into or climb.
  • Establish clear bedroom rules: Make it an absolute house rule that the baby's crib is strictly off-limits without a parent present.
  • Keep climbable furniture away: Move chairs, step stools, and toy chests far away from the crib perimeter.

To monitor both children across different angles or rooms, explore our tips on baby monitors for two rooms.

Will baby's crying constantly wake my toddler?
Surprisingly, most toddlers sleep soundly through newborn crying, especially with a continuous white noise machine masking peak vocal frequencies. Children adapt quickly to sibling noises.
What should I do if the toddler wakes the baby up early?
Use a visual 'OK to wake' clock for your toddler. Teach them that they must stay in their bed reading quietly until the light turns green.
How does Baboo help with two children in one room?
Baboo lets you stream audio from the nursery to multiple parent phones simultaneously, with two-way talk so you can softly whisper to your toddler without opening the squeaky bedroom door.

Sources

  1. AAP HealthyChildren: Safe Sleep in Shared Rooms and Nurseries – American Academy of Pediatrics
  2. CPSC Crib and Nursery Furniture Safety Standards – U.S. Consumer Product Safety Commission