Hi! I can give you some suggestions regarding EC which have generally helped a lot over A LONG PERIOD OF TIME based on the experiences of others as well as that of my own:
1. Don't forcefully peel off your lips. If a crust is hanging or has detached, you can trim it with a scissor (after boiling it).
2. Drink lots of water.
3. Eat healthy food.
4. Exercise, and give enough rest to your body.
5. Try not to brood on the lips all the time.