Crib to big bed Hi all! I'm pregnant with my second now and my son will be 16 months when the new…

Crib to big bed

Hi all! I'm pregnant with my second now and my son will be 16 months when the new baby is born. I'm trying to figure out if we will need a second crib. My mindset has always been leave them in the crib as long as possible, but how long is that usually? When have others transitioned from a crib to a big boy bed?