>>13027234This. And then try and find the material that will take the most time to get an intuition on. Find last year's syllabuses for the classes you picked and start skimming the relevant parts of the textbooks, review some of the homework if you can find it, and especially try to find midterm practice sheets some professors do.
If you find something you really like, leave it lots of time before and during college as the career-worthy subject you'll actually use after you get the paper saying 'I'm smart'.