Hi Jackie,
I can TOTALLY relate to what you are dealing with. My situation is a little bit differnet. I have had 4 surgeries. My doctor also wants to "Watch and wait" and I also have a hard time with that. I have seen 3 different doctors and they all said that so that's what I'm doing.
I would suggest to keep plugging away until you find a doctor you like and stick with them. They will watch your tongue and if it's the same person then they will have something to compare it to.
Just to clarify, you had a biopsy and they said moderate dysplasia, but then another doctor what is there now if leukoplakia?