Then you might want to talk to your guidance counselor at school. If you are in geometry, you might want to add another math class at the semester to catch up with other college bound students at the semester. Or see if you can prove you can test out of the material (better have As). Another option might be taking a class by correspondence or at a local college. If your parents can financially handle it, it could give you more time to get in more classes.

But make sure you aren’t skipping things you find boring, there’s a reason geometry is before calculus (logic and proofs are fundamental to higher math).

Also be sure to interact with your teachers in a positive manner. Teachers love students that want to learn more, and can likely give suggestions better suited to the options at your school.

As for Lorentz Transformations and QM – there are great books on the topics, and I suggest reading some of those. Knowing all of math – especially recognizing equivalences to other expressions (Taylor’s Series for example) is one of the harder parts of QM, especially since the old log math tricks tend not to be taught today with calculators in the classroom.