Ongoing lip fillers. Concerns. How can I get Russian lips and a larger bottom lip? (Photo)

I have been getting lip fillers for over a year now from a board certified Plastic surgeon. I am not very happy with my results. I have been using restylane silk. Recently, an injector at another facility told me that my results were quite poor and that I would benefit from dissolving and starting over with someone else. I am starting to think they might be right. Can anyone please advise? I really want Russian lips, and a larger bottom lip.