Next steps but also first steps

Hi, I graduated with my BS in 2020 with a 3.2 gpa, and mostly C’s in my med school pre-reqs. I turned away from med school to pursue a different career, but a year later I’m finding myself wanting to start the medical journey again. I’m wondering what the best next steps for me would be. I still have a few more pre-reqs to take (both physics and biochem). Would it be best to do a diy-post bacc at an undergraduate level or to take those remaining pre-reqs and complete an SMP?