K.C.
I had the same problem and my son would end up sleeping on the couch. What I finally did was started doing was picking him up before I went to bed and placing him in his bed. After a week or so I told him that I would stay in his bedroom until he fell asleep. After he got use to that I started moving the chair closer and closer to the door, then I started to close the door, I now only close the door to where only a hand can fit through. He does very good at night with staying in bed cause he knows that I am not far away and I can hear if he gets out of bed.