until what age should a baby be in a crib
If this is your situation, make the switch at least six to eight weeks before you're due. You want your toddler well settled in his new bed before he sees the baby taking over his crib. Depending on your toddler's age, you could also consider delaying the switch until the new baby is 3 or 4 months old. Your newborn will probably spend those months sleeping in a bassinet anyway, and your toddler will have time to adjust to the new baby, making the transition to a bed easier when it does happen. Be sure to base the timing of the switch on your child's readiness rather than on the need to free up the crib, however.