I've been seeing excessive dead skin in my cheeks and tongue, I constantly remove it and the next day it comes back?

Cheek biting. Is it possible that you bite your cheek in your sleep? Also if you use a tartar control toothpaste, the tartar control ingredient is bitter. The companies add more flavoring agents to offset this bitter taste and that can cause the lining of your cheek to peel.
Dry mouth. Dry mouth can cause this condition- medications can cause dry mouth.