I'll ask my dad about the colloidal silver. He's done tons of research. I'll look more into its effects on yeast too.
You could try a small spot with the honey as an experiment. Just a little bit, 2-3 times a day on the same spot. See what happens. I'd give it at least 3 days unless you have an adverse reaction.
One of the difficulties in researching treatments for yeast is where the infection is in the body. They don't always specify. I think you might be better off with something topical since yours is a skin infection and topical has less chance of interfering with the meds you already take. Except for anti-yeast meds from the dr, pills and other internal treatments are probably better for internal infections.