BP might be sick need help/advice please

[Diamond Serpents]

Are you feeding in a separate container? If so try feeding him in his cage. Yes I feed both of them in a separate tote, but he has always ate from there. Will feeding in cage make him agressive thinking every time i go to get him hes gonna be fed and bite me? Also I didn't want him to swallow bedding.

What are your cage temperatures? 90ish hot side/80ish cool side? Yes

How often are you offering food? 7-11 days

What is the temperature of the room that the rack is in? 75ish

What about him sounding hollow when I tapped on him? Ive tried feeding at night day ect you name it.. What do you think could be going on? How long can he go without food?, I apologize I know that gets asked alot.