In RN school in college anatomy and physiology nerves can’t be regenerated. Diet changes play a big role n pain. Sugar makes the pain worse, caffeine is a stimulant that causes nerve excitement. Read up on your diet. No fried foods. Red meat can cause it to be worse because it is hard to break down. I only eat turkey, chicken and fish ( no farm raised fish- turkey and chicken range free, no antibiotics). So many people have been scammed. Protein shakes have a ton of chemicals not healthy for your body. Some of the chemicals have been proven to cause cancer. Be careful.
For pain I buy from Amazon magnesium with hemp suggested by someone else. It helps with nerve pain my doctor added magnesium pills because I was slow on magnesium.