So the Monday after Christmas we decided to change Xander's crib into a big boy bed!! We were worried that it might ruin his sleep, but nothing has really changed. We are very proud him. We are still waiting for him to discover that he can get up and play in the middle of the night, but he hasn't figured that out yet.
Ironically Xander is much happier when he wakes up from his naps now. I think he likes the freedom to get out of his bed when he chooses to. Sometimes he just lays in bed awake. Silly Boy!!