Should I switch out of music major?

Hi! I’m an undergraduate predental student, and I’m currently a dual degree student with biology and music. I’m taking my music classes, and they are incredibly difficult. It’s harder than my science classes. I’m a really good musician, but music theory is just not it. I don’t know if I can maintain an A in my music theory classes. im scared this will affect my chances at dental school. please help , and please don’t be mean.