I’m sorry to hear this is an issue, Stan. It has been a while, but it has happened to me several times. I have bitten the lips and the cheeks. I realized that it is most likely to happen to me when eating in a hurry and/or eating while distracted. Chewing gum has caused it before as well especially while talking with gum in my mouth. I learned to eat more slowly and to avoid multitasking while eating, i.e. working at the computer while trying to eat quickly. I will copy a link to a product I have used with great success that helps with healing and numbs the tissues as well. Hope this helps! Eric

https://www.orajel.com/en/products/adult-oral-care/orajel-antiseptic-mouth-sore-rinse