Who would I need to see after the dermatologist for unresolving lumps on lip border? (Photos)

I’ve had belotero on/off for a few years. About a year ago I developed lumps under my top lip. Over the last year I’ve had attempts to squeeze filler out with needle x 2, (some filler was squeezed out) and hyluronidase injections x 2 or 3. This resulted in mild improvement but not resolution, and it affects my smile, causing messy lip line that drags over my teeth. I’ve been told to just wait for it to dissolve and that it isn’t noticeable. Who would I see next after derm?