Q: My daughter will be 21 months old when we have our second. Should we purchase another crib or move our daughter to a "big girl" bed?

A: In my experience the best time to transition to a bed is between ages 2 and 3, with some room at either end depending on other factors, such as your child’s size and whether she’s a “climber.” Still, your daughter will be on the early side, and adding a sibling is already a lot for a little one. If you can, keep her where she is, get another crib—even if it’s just a portable one—for the baby, and let your daughter deal with one change at a time. Mom to mom: You don’t want more work for yourself if it’s not necessary! But if space or budget won’t permit a second crib, transition your daughter to a toddler bed about two months before your due date. This way, she can get used to her new bed—and won’t feel like the baby is sleeping in “her” crib.

Answered by Rosie Pope