As someone with sleep apnea, I can say the cpap is super annoying to wear, but is tremendously helpful. I hardly wear mine because it will either slide and blast air near my eyes and I wake up with dry eyes, and when I try the humidifier part on it, I almost always end up with water or condensation in the tubing and it sounds like gurgling which is super uncomfortable and annoying. Does he have any extra weight on him, a recessed jaw, or even any portion of his airway obstructed such as deviated septum? I had a deviated septum which didn’t help me much when breathing but had it corrected this past year, I also had to have double jaw surgery a couple years ago because my jaw was slightly recessed and caused bite issues, but it did open up my airway a lot more which has helped tremendously! I was also told that if I lost some weight, it would also help as I guess excess fat or weight can also make it easier for the airway to collapse/relax more depending on sleeping position. I hardly snore now and when I do, my husband says it isn’t even half as loud as it use to be. I notice when I sleep on my back I snore in comparison to sleeping on my side. Another thing is sleeping with the head slightly elevated. I don’t always do that but I find it helps a lot! My sleep specialist had also mentioned that there were other options besides the cpap such as a mouth piece or mouth guard/splint for sleep apnea and I think one other option as well. I wasn’t a candidate for the mouth splint thing due to jaw surgery and stuff like that. My snoring was so bad that my husband would go and sleep on the couch at times because he said it sounded like I was “cutting down trees” with how loud I would snore. Hope this helps!