C.M.
My son is 29 months old and last night was his first night in his big boy bed. He is also a great sleeper. We just put an extra full size mattress on the floor. The week before I asked him if he wanted a big boy bed and made it sound really exciting and special. He got to pick out what color sheets (blue) and got his first pillow. He slept all night through till 8:30 this morning. Every little one is different. If they like their crib and not trying to get out, eep them in till you think they are ready. My little boy was starting to kick his crib like crazy and I didn't want it to break.