Sleep Apnea Treatment

He snores, stops breathing, and then starts breathing a few seconds later after choking. It is really loud and he doesn’t get a good night sleep because of it. It’s awful trying to sleep anywhere near him because it is so loud. Any advice on OTC or natural options? What works the best? He will hopefully visit a doctor soon to take care of it, but we’re both in college right now and he doesn’t have a lot of spare time to find a doctor and get an appointment.