I keep my son in the crib for naps, he is already crawling at 5 months and even pulls himself to standing on furniture. It seems like with these new skills he is having a really difficult time going to sleep. I used to read him a story, turn on some music and leave him in the crib. He would be asleep within a few minutes. Now, he crawls around the crib or stands up, then bangs his head and falls down and cries. I have comforted him and started the routine again and again and it just repeats itself until he is hysterical. Have any of you dealt with so much activity for such a small babe?