Major in Chem E and study hard for the MCAT. The most likely path to becoming a medical doctor is to do well in school, and attend one of the public medical schools in your home state.
Looking back three decades, I wish I could have taken Calc II and III instead of Philosophy.
A high C or low B in Physics E&M, Organic Chem, or Calc II isn’t a death sentence for a med school application, just try to keep > 3.6. The MCAT score can balance out a couple of tenths on GPA.