How do we get our son (20 months) to go back to sleep at 5am. For the record, he is EXHAUSTED. This used to be 4am but we changed his bedtime to 8pm instead of 7pm. He wakes up and sometimes goes back to sleep but not always. This morning was constant tears (because still tired) but he wouldn't go back off. He fell asleep for his nap at 10:30. His nap time is 12:30/1pm!