@honeybees - It's so frustrating when someone won't get help! Treatment for sleep apnea can really be life-changing. My father snored terribly for years and years; my mother even had to move to a different room to get any sleep. He resisted getting tested. He drinks too much and is on medication, and we thought that was the reason why he was so sleepy.
Finally, he agreed to have a sleep study and was fitted with a CPAP (continuous positive airway pressure, I think it means) machine. Wearing the mask at night took some getting used to, but once he got the hang of it, the difference was like night and day.
He used to sleep twelve hours a night and would still be tired and fall asleep in the afternoon. Now, he sleeps seven or eight hours and wakes up refreshed. At Christmas, he stayed awake all afternoon, discontinuing a very special family tradition of him falling asleep in his chair!
I'm not sure if the sleepiness was due to low blood oxygen saturation levels or because he just couldn't sleep deeply with the apnea. But hang in there, honeybees, and keep working on him. Here's hoping it gets better!