Look at the class selection in each major and see what you find interesting. Usually you will start out with the basics (bio, chem, calculus) anyway. Fwiw I sampled microbiology Soph yr and fell in love (mostly with the lab, which is found fun). As a major, I learned about viruses and bacteria and became skilled in lab work with sterile technique and tissue culture. I’d been accepted into grad school immediately after graduation but at the last minute decided to take a job and see what it was like in practice! I worked with HIV (virus/tissue culture) and found I didn’t like it. I tried a couple more jobs. The skills I’d learned (in labs and an undergrad research opportunity) were transferable. I ended up finding my way to my passion by taking a class here and there until I found IT. Then I went back to grad school. Otoh if there’s another program that covers material you find more interesting, go for it. You want to be excited about the classes!