Thank you all for your responses.
I really hope that the combination of correcting the deviated septum, losing weight (I am down so far from 85.5 kilos to 79.5, 188 to 175 lbs) (height 1.70 mtr, 5'7") and using the oral device will get me out of the woods. Is that a reasonable expectation?

Last year I was diagnosed with osa, 31 ahi and 81% saturation. I tried to use a cpap for a few months but could not get used to it. In desparation I ordered a dental device. Using it I felt I was sleeping better but still tired in the daytime. When I returned to the ENT he examined me and asked if I...