I have been through phase 2: Sleep at 12:13, Wake at 12:38, Length of 0.4.
An android sleepbot application assists me in recording the entries.
I had no difficulty falling asleep, I felt a bit apprehensive I would not be able to (for 20 minutes only). I had no difficulty getting awake either and would have kept sleeping if not woken up. I had dreams.
I started to feel the strain before the nap but now I feel totally refresh.