Might be worth checking if it is that noisy, I know with my gf that they said it could be affecting his behaviour as well, because he isn't able to get a decent nights sleep. The tonsils are too big for his throat and they are in most kids but for him it affects his breathing at night, and he drools quite a bit too considering he is 3.5. Good luck with it all, hopefully you can eliminate some things and get some answers.