Help with CRB

[shimmer]

I need some serious help with a CRB. I recently got him and he had mites which I treated but now he refuses to eat. His mouth is red around the teeth on the lower jaw and he has a pool of saliva in the back of his throat. I have been keeping the temps 80-90 and hum 80%. I have no idea if this is mouth rot or a RI but I am starting to worry about him. I have lowered the hum to 60% and have raised the temps 85-95 to start helping his immune system and if it is an RI.