I’m thinking of doing the same thing!! I have mostly As & Bs but 3 Cs on my transcript so my GPA sucks unfortunately. One of the Cs was also in my science class, Biology! I’d say you should if that’s what you want + need. If you have the time to retake the course & wont fall behind on credits, I see no reason not to. I’d definitely talk to an advisor first to get more info though!! :))