I was sleeved on Nov 12th. I have severe apnea, settings at 15 for my cpap (o2 level would go to the 50% w/o CPAP)! I am going today to have my levels lowered to 6 and the doctors tell me only 3 more months with my CPAP. I have been using it now for over 4 years faithfully.
You will get better too. Good luck,