9 months post op and still experiencing delayed healing - what can be done at this point? (photo)

Its been about 9 months since ive had lip reduction surgery and it doesn't seem to be healing properly. Ive gone back to the surgeon who done it and he gave me a couple of steroid shots in my lip but it doesnt seem to help much. Also you can still see the scar which is no longer on the inside of my lip. What should I do?