If you can’t switch I would ask for a longer appointment slot next time so that there is enough time to discuss your concerns with them. Try asking for them to give you a more detailed explanation of why one thing is “watch and wait” and another is “biopsy”. It is a double edged sword though. Having that level of detail made ignoring the spot on my leg easier now. But it made waiting for the results of what he did biopsy very stressful. But for me, I think the wait would have been excruciating without know why he did what he did in detail.