In the past few weeks, I've been able to wake comfortably and fully rested with six to seven hours a night of sleep. I still seem to need a longer night every few days, but not by a lot. This is allowing me to recapture much of what I consider to be my productive day.
Also, I've once more begun waking up when I decide to. This is a trick that I'd lost since last November, through the surgeries and the chemo. In my normal health, I can tell myself before I go to sleep when I want to wake up. I wake up then, usually three to five minutes ahead of the target time. I can go weeks without ever using my alarm.
That clock in my head is finally back. I hadn't realized how much I missed it, simply as a signifier of how I feel.