He slept with his mask the whole night and didn't wake! AMAZING!
Unlike me, one night didn't make him feel better
but, hopefully as he sleeps through the night he will start to get more restorative sleep (more REM). Considering that the REM stage was the only stage he has apnea, it is understandable that his brain adjusted to minimize this stage (hence the exhaustion despite adequate hours of sleep).
May night #2 be a success as well!
I'm more reassured on kids with cpap -- the respiratory therapist told me it is more common than most realize. I'm still open for advice if anyone has anything to offer... pediatric sleep apnea is something that I never thought existed until I suddenly realized my son was living with it!