How do i keep myself from snoring after drinking?

Sleep Study: You should get a sleep study done either at a sleep study center(best) or have your doctor order at home sleep study (as long as it has some form of positional monitoring) to get an accurate diagnosis first.

Oral appliance: See your dentist about a snoring appliance. It protrudes the lower jaw and opens the airway behind the tongue. This reduces the velocity of the air going to and from the lungs and that can eliminate snoring. They have some over the counter devices in the drug store that can be made at home.