I use to have problems when my boy was that age. I couldn't keep him alseep as soon as I put him down. Seems like ages ago now, but he would fall asleep in my arms with no problems but soon as i would put him down he would wake up. So I started just calming him in my arms then before he fell asleep putting him back down then patting him and softly running my fingers across his face and head till he was asleep. Worked wonders for me.