I would remove one of my deposits now.
If you do not apply to medical school, do you think you will always wonder “what if”? If the answer is yes, then choose biology and try to be a competitive applicant to medical school. You could always change your mind if your interests change, etc.
Nursing/PA etc is not going anywhere. If you are a biology major and decide after graduation to apply to PA programs or accelerated BSN or NP programs, you can. The issue is money- I don’t know what your finances look like. There are graduate loans (will your parents help with costs?) and nursing programs do give scholarships. You would also need the prerequisites.