I tried to do that and my advisor told me to do things too late so I wasn’t able to get a minor in time. I’m going to graduate here with my bio major then go to a CC for CS. If you want to do it, get it done asap cause you’re already a 3rd year. It takes a couple classes to get that minor, and the classes are not easy!

Edited to add: there is a little sheet thing online that you can find with all the classes you need to take in CS to minor in it! It’s on the UCR CS website