Switch to biology major?

That is what collge is all about-- finding yourself. You're in the 3rd year of college and want to switch- GREAT! Generally, you need about 36CH in a major. 36CH is 12 cles which would take 2-3 semesters to finish. That is only about another year. Thats not bad at all. Even if it takes you 2 years for whatever reason, that is only 1 more year than you have anyway. Its worth a shot. Do it!