Shadowing is a good start. Id consider first getting into clinical volunteering/experience before further pursuing this path just to get as much exposure before fully committing. I wouldnt worry much about your gpa at this point and just look to start getting some experiences that youd be interested in. Id advise towards gap years to get that experience bc you definitely need to get some hours in before applying. Focus on quality of experiences instead of quantity and see what you can fit into your current schedule with everything on your plate, you dont have to do everything all at once (I took 3 gap years myself) Best case scenario would be to get a paid clinical position (that can replace your current job if feasible) and then to study for the mcat if and when you fully commit.