Agree that it is time to get on pap therapy asap. I have also had a challenging course with OSA and, like you, my first physician was also a dismissive "it will all be ok" type of person. I finally sought out another opinion from a fully boarded sleep medicine physician who all he does is sleep medicine. He immediately transitioned me from cpap to apap -- all my problems solved.
My point here, given what you have described, is that it is crucial to seek the right physician who can help you work through all these issues. Someone who does sleep medicine full time. Best of luck to you and keep us posted on your progress. You will feel better with the right treatment.