I was offered one with I was in the AF about 25 years ago. Turned it down because it would’ve affected my deployability.
Haven’t taken up the subject since, but I found that losing weight and changing the diet up helped significantly with keeping a good airway and, while I haven’t done a sleep study in many years, I’ve found that I get a far better sleep at night.
Did you get VA disability for sleep apnea? It’s an automatic 50%.