Re: snoring, choking sensation when trying to sleep, trouble swallowing
I agree with the previous poster. It sounds like SA, and Acid reflux.
If he absolutly refuses to call a doctor (which he really should) perhaps he could sleep with a backpack on and place a tennis ball in it. That way if he were to roll on his back, he'd wake up enough to roll over. That's an old school treatment for stuborn people like my ex husband, lol
As for the Acid reflux issue.. he should really see a GP but maybe you could put him on some Prednasozen or some other type of over the counter. Maybe if that isn't enough it will make him realise that he really needs a doctor.
Best of luck! Keep us posted