Today I move to the next segment of Phase Two, with a core sleep of five hours. Getting up was not overly difficult, but I felt some pretty significant tiredness and yawning for the first hour or so after waking. Due to yesterday's sleep schedule variance, I was thrown off a bit on my core nap for today, getting to sleep around midnight. Thus I tried to do a gradual return to my scheduled sleep times.
I'll be reminding myself that I'm close to the end of Phase Two - just one more segment after this until I essentially make it to Phase Three and thus my final adaptation period.
The first two naps today were great - dropped into a heavy sleep about halfway through, and it definitely seemed longer than twenty minutes. The third nap felt a bit lighter, but overall, I'm marking this as progress in my book. Once I can consistently enter a heavy sleep for all three naps, I should be well on my way to making it through adaptation (I already get consistent heavy sleep from my core nap).