OP really should have taken Math 10A followed by 10B, which are selected topics in calculus, statistics, and combinatorics specifically for biology majors and pre-meds, and which is different enough from ordinary calculus courses that it should not be considered a repeat of the OP’s 4 on AP calculus.
As it is now, repeating the AP calculus credit with Math 1A and then not getting an A grade or changing it to P/NP grading will likely look bad to medical schools. Doing the latter and then repeating it again with the lower level Math 16A (calculus for business majors) will likely look even worse.