Kal-El woke up at 5:45 a.m. this morning, talked to himself for 15 minutes, and then called for me at 5:59. He did not get out of his bed, he waited for me to come tell him it was O.K. I placed the mattress right next to his crib thinking it would keep him from rolling off at least one way. That backfired. He rolled off at midnight and woke up scared and under his crib. I tucked him back in and he went right back to sleep.
He was really excited to take his nap when he remembered about his "big boy bed." I was worried he would wander around a lot during naps, but he talked to himself for about 30 minutes (as usual) and is sleeping away.