Writing a hard of hearing character, need advice!

The main character in the story I’m writing is hard of hearing, he uses hearing aids on occasion and communicates mostly in ASL. I’m mostly worried about misrepresentation, and I have it written so that without hearing aids he can hear vague background noises, like echos of waves on the beach or blurred chatter in a coffee shop, but he can’t really distinguish sounds or words. this is my first time writing a hard of hearing character so if anyone has any input that would be much appreciated.