There aren’t HS courses in each of the five core areas left for you to take?
Can you take dual enrollment classes instead of early college? (if that maintains your GPA/salutatorian status?) DE also might be less costly than enrolling in early college. Some districts have free DE courses.
You can do that and the grades in those classes will be required to be reported to med schools (same if you take DE courses.) There is no rush to get to med school. The more relevant classes you have, the more clinical experiences you have before applying, the better.