Sleep apnea

This is the way I sleep at night. I make it 4 hrs sometimes more sometimes less. My mouth gets so dry. I don't think the humidifier is working. I do feel more rested during the day and don't take naps any more. When I went thru the sleep study without the BPAP I had 60 episodes in an hour.which is extreme sleep apnea when I slept with the BPAP on a high pressure setting I only had one episode in a hour and a half. I do feel better except for the dry mouth.