My advice…and I’m sure others will disagree or have other strategies: Make sure you have strong Organic Chemistry and Physics (two terms of each with labs), Take Statistics and the highest Calc you can handle. Anatomy and Physiology, Biochemistry, Genetics, Microbiology are good choices for fleshing out your Bio prep, Take Psychology and Sociology, and Neuroscience/Neurobiology. Whatever you choose…have a well thought out back up plan. Good luck!