I'm in the middle of this as well. Both of our kids started climbing out of their cribs as soon as they could walk. 2 ideas-what has been working for us is not to lay next to his bed, but to sit at the end of the bed until he's really relaxed, he's let me leave the room some nights, but not other nights. Now, I'm sitting on the floor. Tomorrow night I'll sit in the doorway....we'll see how it goes. My oldest had the same problem...but completely different kid! For him, he wanted to sleep in the bed, but it was just too exciting for him to relax. Every night we'd start in the bed and when he got up too many times, we put him in his playpen (the gates that connect together-much lower to the ground than the crib) He could climb out of it, but didn't. He just needed the comfort of the confinement to fall asleep. Then I'd move him to his bed when we went to bed. He eventually started falling asleep in his bed and we didn't have to use the playpen...It took a while, but it worked for him and for us.