Cannot get rid of scabs Efudex/Dovenix post treatment

I was diagnosed with actinic cheilitis ( keratosis on my lower lip) and my dermatologist prescribed Efudex/Dovenix. He said I should use it twice a day for 5 days on my lower lip. I hardly had a reaction, just a little burning, but the white film on my lower lip remained the same. I was going to go back to the doctor and tell him this was not working, but I saw that the prescription said use 5-7 days so I decided to use it an extra 2 days for 7 days and applied a little more. Burning increased and I began to see the whole film on my lip dissipate.

Once I stopped using Efudex/Dovenix, I began to get scabs form on my lower lip ( about 2/3 of my lower lip) and a yellowish oozing coming out from my lip with slight bleeding under the skin. I began using Vaseline during the day. The problem I am having is that most of the scabs fall off when I eat or even when my upper lip touches my bottom lip. Then the yellow oozing starts and the scab begins to form, but some of the scabs don't hold. I feel like I am going around in circles. It has been 5 days since I stopped treatment, and I am getting frustrated with the scabs falling off my lip. I cannot brush part of my teeth or use any silverware to eat. When I do so, scabs come off and I begin the process all over again. I can drink soup out of a cup and eat chicken/fish because I use my fingers to put it in my mouth without touching my lip. How will my lower lip heal if a scab cannot stay on for more than a day? The pain is not to bad. But the skin is very raw in part of my lower lip and burns a bit when the scab comes off. Then the pain goes away when I put on vaseline and the process starts all over again Any suggestions?