My 10 month old has suddenly decided he will not go to sleep for anyone but me. He will go to sleep if I stand by the crib but will scream if I try to leave before he has fallen completely asleep. Sometimes I have to stay in there for an hour, this is very difficult as i have a 3 year old daughter as well. The other night we left our children with my sister, who has watched them many times. My son screamed any time she tried to put him to sleep, we ended up having to come home half way through the movie. As soon as he saw me he laid down and went to sleep. How do I get him to fall asleep on his own, without having to stand by his crib until he is completely asleep?