Most families who bed-share should aim to transition their child to independent sleep between 6 and 12 months of age, though many continue longer and make the switch during toddlerhood. The “right” time depends on your child’s age, your family’s circumstances, and whether your child is showing signs of readiness for independent sleep. Here’s what the evidence says about safety timelines, developmental readiness, and how to make the shift smoothly.
The Safety Window: Why the First Year Matters Most
The most urgent reason to stop bed-sharing is physical safety. In 2022, roughly 3,700 infants died from sudden unexpected infant death (SUID), a category that includes SIDS and accidental suffocation in bed. The highest risk falls between 2 and 4 months of age, a critical developmental window when babies are especially vulnerable.
The American Academy of Pediatrics recommends that infants sleep on a separate surface in the parents’ room for at least the first 6 months, and ideally for the full first year. That means room-sharing (baby in a crib or bassinet next to your bed) rather than bed-sharing (baby on the same mattress). After about 12 months, the risk of sleep-related death drops significantly, so the safety calculus shifts. For families still bed-sharing past a child’s first birthday, the conversation moves from physical danger to sleep quality and behavioral development.
How Bed-Sharing Affects Your Child’s Sleep
Children who bed-share wake up more often at night. Research comparing co-sleeping and solo-sleeping infants from 3 to 15 months found that bed-sharers averaged 5.8 awakenings per night, compared to 3.2 for solitary sleepers. The total time spent awake was the same in both groups, though, because the bed-sharing infants fell back to sleep faster after each waking. Their awakenings were more frequent but shorter.
Polysomnography studies on younger infants (around 3 months) found a similar pattern, plus a shift in sleep architecture: babies spent more time in lighter stages of sleep on co-sleeping nights and less time in the deepest phase of non-REM sleep. REM sleep and total wakefulness stayed the same. In practical terms, bed-sharing infants cycle through lighter, more fragmented sleep, even though they may not seem distressed by the frequent wakings.
One interesting finding complicates the assumption that bed-sharing always leads to worse sleep habits. A study of early childhood bed-sharers found that habitual bed-sharers actually fell asleep faster (about 9 minutes on average) than solitary sleepers (about 12 minutes). However, once researchers accounted for socioeconomic factors, the difference was no longer statistically significant. Some researchers also note that parents who bed-share may simply be more aware of their child’s nighttime wakings, inflating the perceived problem.
Behavioral Effects of Prolonged Bed-Sharing
A prospective cohort study tracking children from early childhood into preadolescence found that early childhood co-sleeping was associated with increased behavioral problems later on. Children with a co-sleeping history had 1.2 to 2.1 times the odds of behavioral issues during childhood, and 1.4 to 2.3 times the odds during preadolescence. These included both internalizing problems (anxiety, depression, withdrawal, somatic complaints) and externalizing problems (aggression, attention difficulties). The predicted risk for withdrawal and depression more than doubled.
These findings held even after the researchers controlled for baseline behavioral problems, meaning the association wasn’t simply explained by difficult children ending up in their parents’ beds. Reports came from parents, teachers, and the children themselves, adding consistency. That said, this is one study, and correlation is not causation. Families who co-sleep long-term may share other characteristics that contribute to these outcomes. Still, the data suggest that extended bed-sharing past early childhood is worth taking seriously as a potential contributor to emotional and behavioral challenges.
Signs Your Child Is Ready to Sleep Alone
Age gives you a rough timeline, but your child’s behavior tells you more. A key sign of readiness is that your child has fallen asleep on their own at least once, or put themselves back to sleep after waking without your help. If that has happened even occasionally, it means the skill is developing. Most children are not developmentally capable of this kind of independence before 5 or 6 months of age, so attempting the transition earlier often leads to frustration for everyone.
If your child has never shown any ability to fall back asleep independently, that may simply mean they’re not ready yet. You can’t force the skill. But if your child is older than 6 months and consistently needs your physical presence to fall asleep, that’s a learned sleep association rather than a developmental limitation. At that point, the transition is less about waiting for readiness and more about gradually teaching a new habit.
How to Make the Transition
The method that works best depends on your child’s age and temperament, but gradual approaches tend to be easier on everyone when you’re coming from a bed-sharing arrangement.
For Babies (6 to 12 Months)
Start by moving your baby to a crib or bassinet in your room. This preserves the closeness while introducing a separate sleep surface. Once your baby adjusts to the crib, you can work on moving them to their own room. Some families use structured sleep training methods, like timed check-ins where you briefly reassure your baby at increasing intervals. Others prefer a gentler approach, sitting in a chair next to the crib until the baby falls asleep, then gradually moving the chair closer to the door over several nights until you’re out of the room entirely.
For Toddlers (1 to 3 Years)
Toddlers understand more, which is both an advantage and a challenge. You can talk to them about their “big kid bed” and involve them in setting up their room. A practical strategy: put a mattress on the floor in your child’s room and sleep there for a few nights. Then gradually move the mattress farther from their bed until you’re no longer in the room. This gives toddlers the security of your presence while building comfort with the new space. Expect some protests and regression, especially in the first week. Consistency matters more than the specific method you choose.
For Older Children (3+)
If your child is still bed-sharing past age 3, the pattern is deeply ingrained, and the transition takes more patience. The gradual retreat method still works well. You might also introduce a reward system, celebrating each night your child stays in their own bed. Keeping a predictable bedtime routine helps signal that the new arrangement is safe and permanent. Some children respond well to a transitional object like a stuffed animal or blanket that becomes their “sleep buddy.”
What to Expect During the Transition
Almost every child resists the change initially. The first three to five nights are typically the hardest, with crying, repeated requests to come back to your bed, or middle-of-the-night visits. Most children adjust within one to two weeks if you stay consistent. Setbacks are normal during illness, travel, or stressful events, and a temporary return to bed-sharing during those times won’t undo your progress as long as you go back to the new arrangement afterward.
Parents often find the transition harder on themselves than on their children. If you’ve been bed-sharing for months or years, the sudden absence of your child at night can feel jarring. That’s normal. The adjustment period is real for both sides, and it gets easier quickly once everyone settles into the new routine.