> "boil and bite" type mouthguards on Amazon These can work but feel pretty horrible to sleep with. If you can afford it, your dentist can make you a slim fit

> "boil and bite" type mouthguards on Amazon These can work but feel pretty horrible to sleep with. If you can afford it, your dentist can make you a slim fit top guard that is far more comfortable. I wear one and it's 100% fixed my jaw tension and tooth grind damage problems. There is also a new type of fitted double guard which holds your jaw slightly open to alleviate apnea. They're expensive but depending on your country's healthcare you may get a rebate if prescribed one after a sleep study. If your finances/healthcare don't permit the above, I recommend trimming down the boil and bite guard with scissors, you don't need most of that plastic. It will still suck compared a proper dental guard.