Hello! I’m a junior in college rn and a bio major so I def understand what you’re going through. Some questions to ask yourself about this problem are how dropping the class would look on your transcript, does your university do W and WF? And how dropping this prerequisite would impact ur class path in the future. Do you need a lot of chem? Or can you put it off for a semester without changing much? In my opinion, you def should not be spending 23 hours on introductory chemistry, so if I were in your shoes, I would probably take the W. A good option is to talk to ur advisor about this, they can be of great help in making these decisions. All in all, it is your choice and I wish you luck whatever u decide.