Bump.
In answer to Tom's question, it's definitely a pattern but I don't know if I'd call it normal, mainly because it doesn't fit in with my daily life. If I were retired it would be great...I could nap. But waking at 2-3 am then needing to go back to sleep from 5-7 doesn't fit in with my summer hours which are 8-4. I need more than 45 minutes to get going and get out of the door. And if I stay up then it's a problem getting through the day, especially if I have to drive somewhere that is more than a few miles away. I take my sister to her doctor appointments, a 45 minute drive. I can't make it on 4 hours sleep.
I did great for a few months but now the last two weeks I'm in the same routine again. I have been awake since 2:30...I tried falling back to sleep at 4:30 but it didn't work. I'm going to get up now (5:30) but I hate to think of how tired I am going to be after lunch.