my mom and dad snore LOUD. and by loud i mean...SNORE! i cant stand it when i come ver to my dads house for 6 days or a week and he Snores very loudly...my mom isnt as bad though. and no i do not know anything.
Hold his nose while he is sleeping. Then he will have to breathe through his mouth. My brother did this to my other brother when they were 9 or so. It worked.