How do I pursue a degree/masters/doctorate in mycology if I already have a BA?

Hello! So one of my passions is mycology. It has been a hobby for quite a while. I would like to go back to school to pursue this seriously, but I need some advice about what steps to take. I already have a bachelor’s degree in studio arts and a minor in art history, so although I have done general ed obviously my degree has nothing to do with science. My main question is, should I go to a local CC advisor to have them help? Has anyone else done something similar and have advice? I know what I want to do but I am unsure of the steps to get into a biology or botany undergraduate program necessary to continue towards a mycology masters and beyond.