Thanks for your response! We've been trying to get him to bed earlier, but inevitably he's still waking up super early in the morning. It can be anytime between 4 - 5. I think he's actually having nightmares. We got him a much brighter nightlight over the weekend, but that still doesn't seem to have helped. Is this a normal developmental thing? Is it possible he's cold and consequently sleeping lightly? Lastly, if I want to try to force a nap, what time do you recommend I try and how late/long should I let him sleep. Historically, if he takes a nap at around 2:00, he won't fall asleep at night until around 9:00. Thanks again!!!