I’ve also been looking into alternatives to help with sleep, especially central apnea. Tried a few CBD oils myself, with mixed results, but I do think quality and guidance make a big difference.
It sounds like the lab tests haven't been working out for you, and it's hard to trust the process when nothing seems to explain what’s happening. Maybe it could help to look into some better home sleep study kits or even get a second opinion from another doctor who’s open to home testing.
I've struggled with CPAP too, and your ideas about focusing on nasal breathing and even combining treatments sounds like a plan worth discussing with my doctor.
When the mask leaks, it seems like the machine catches a lot of false events that end up boosting the AHI score. It makes sense to want the reading to reflect only the time when therapy is actually being delivered.
It sounds like your CPAP is really working for you. I'm glad you're getting better sleep and feeling rested in the mornings.
I've seen similar issues, and sometimes a good cleaning and making sure all the parts are aligned properly can help.