With which position do u sleep at night? It might be worse if it's something like stomach i recommend trying to sleep on ur back or switch sides every night for chewing and swallowing correctly try to chew with both sides equally and there's tutorials on the Beauty quadrant where it tells u how to chew and swallow correctly when drinking water or eating food try to swallow with ur throat without using ur tongue much and return it to the correct posture after swallowing.