just to let you know, you're not alone! My DS is about the same age, and wakes a few times most nights and always between 3 and 5 in the morning. Initially he'll yell and cry, but then it progresses to babbling and kicking his legs around and generally playing up. It is always a fight to get him back to sleep. Sometimes he just wont, though. He's a very active child, always has been. I haven't got a solution, or any real suggestions, and even went to sleep school on the weekend to see if they could suggest anything (but left after a couple of hours because I'm not doing CC!). I'm paying for a private independent mothercraft nurse to come tomorrow night to see what her take on it is, and if she can suggest anything useful. I shall come back and let you know!