Living with Stress

I’ve recently been diagnosed with sleep apnea, yes I’m about 50# heavier than ideal, but after using the mask system as diagnosed/prescribed for a month or two I am still quite un-rested upon waking for the day.
I’ve also been dealing with panic/anxiety & depression for a decade plus. my Dr. sent me to a psychologist and after a couple of sessions, not really ‘doing’ anything besides history/update/etc. I’m still ragged in the a.m. On weekends, I’m “good” for a couple of hours and then I want to sleep but can’t quite fall asleep, but am too tired to “do” much of anything. Weekwise, I can get excessively tired at work; like hovering on that ’shock’ edge where you physically drop off to sleep but ‘catch’ yourself.. stretch out that body-stressing feeling for most of the day. Counselling wise, the possibility of buried/repressed memories of abuse or early trauma is a high possibility, but as yet unconfirmed. Sleep tests showed that I drop out reasonably quick, drop down for 5-10 min but then my brain pops back up pretty “high” on the readouts for the most of the night. I don’t wake up but I hover near there for most of the night, then before I’m “supposed to” wake up, I drop back down for another 5 minutes; but never get / stay in the rest-gaining part of sleep. It’s hellish; and been going on for a couple of years, progressively worse. With the CPAP machine, I may get a day or two a week with some restfulness but far from any consistency. I don’t take anything drug-wise to sleep; sometimes supplement with melatonin 3mg but that is negligible; I get better results from a glass of kefir (cultured milk) before walking the dog and then settling down to bed (1hour precursor to “decompress”) How do I “make” myself get the deep sleep and stay there to heal and rest physically/physiologically? The progression of this is daunting to make any progress, limits social activity as I’m too tired, let alone deal w/ anxiety & depressions’ root issues to have much of a social or creative life.
any suggestions/experiences?
Thank you-