Awake at four

This week:

Slept through. Whole night, no waking. It has been so long that I lay there in the morning trying to work out what was different.

Repeat study came back and the apnoea is much reduced. Ten years of that mask.

Waking at four again. Not anxious, just awake, lying there listening to the boiler.

The sleep has changed shape rather than improved. Different, not better, and I cannot yet tell whether I mind.

Patience.