This is just a quick update to talk about some changes to my schedule.
Somehow, my schedule has moved back a bit and I am now getting up at 5:00am each day! I'm not really sure how it happened, but it was an accident. Quite a few times I went to bed early and woke up naturally at 4:30am, but I think this is really too early so I settled on 5:00, and since I have done that I have not overslept once. Even this morning when I forgot to set an alarm, I woke up naturally at 5:05.
The other thing to report is that I think I have found the correct lengths of time for my sleeps. At the moment I am generally sleeping 1 - 2 hours for my nap, and 5 - 6 hours for my core. I think I generally need 7.5 hours total sleep in a 24 hour period, and a nap of 2 hours with a 5.5 hour core seems to be ideal.