I wonder if anything in this related discussion might be helpful or so familiar to you.

- Tongue biting while talking: https://connect.mayoclinic.org/discussion/tongue-biting-while-talking/

I have a similar problem but it has several reasons that causes it. It happens when you eat because when you chew the food, it’s causing misalignment of your lower jaw. If this is happening like mine, you can hear and feel a clicking kind of sound at the back of the jaw where it attaches to the upper jaw bone. It can hurt too and accidentally make you bite your tongue or cheeks causing what’s known as a Cancor sore.

Another reason I’m afflicted by it is because I have dentures but seldom wear them. This has caused the lower jaw to shrink causing the misalignment. The damage is done and cannot be corrected without major jaw bone surgery to correct the shrinkage. I assume an oral surgeon could help to correct or ease the hinge issue in the back of the jaw. One thing to remember, the harder the food is to chew before swallowing, the more problems it creates and more chances to bite your cheek or tongue by mistake. So the softer the food, the better off you’ll be.