It would be good if you can keep his heat lamps on a regular schedule like Kingofnobbys says. If you're in the same room with him with the lights on when you stay up late after his lights go out, you could try covering his enclosure with something to keep most of the light out. That's what we do we do if we stay up past our beardie's bedtime (we use a large dishtowel), and he seems to sleep through whatever is going on in the room. They're hard core diurnal and will usually fall asleep very quickly once the lights go out :sleepy2: