Some parents feel pressure to move their child out of the crib, as if it were an achievement or sign of maturity, says Kim West, author of The Sleep Lady’s Good Night, Sleep Tight and 52 Sleep Secrets for Babies. “Some parents even get competitive with other parents about how early they make the transition,” she says. But there’s no need to move fast. Before age 2.5, kids don’t have the cognitive and verbal skills to understand the rules of a big-kid bed, so switching them before that will just make things more difficult for everyone. Plus, if your child still fits comfortably in the crib and she feel secures there, even past age 3, why move her?