Blueshift

Has anyone been successful in doing their first few years of university online, then completing an entirely separate four-year degree through a brick and mortar institution later? To introduce myself a bit: I’m presently working in the north in another profession, while doing my BSc degree online. I’ve been having some serious second thoughts about my chosen career path though. Without getting into a longwinded story, medicine has always been in the back of my mind, and I’m starting to research the feasibility of pursuing it. Although my grades in my current online degree aren’t bad, they aren’t up to snuff with those required to be competitive into medical school. Ideally, I’d like to start an entirely independent degree, with none of my courses from my current degree counting toward my final cumulative grade. Would anyone know if this would be possible? Thanks for your time!