You say your grades weren’t good freshman year. That translates to the concept that you likely didn’t get the foundation needed from those classes to move forward successfully in those fields. You need to take a step back and solidify if not relearn the material from freshman year before even considering skipping classes and a year of school.
Slow down, take a step back, and rethink your path. Decide what your REAL objective is. From the sounds of it, you just want to graduate from HS early. But that objective most likely wouldn’t result in you getting into a top school, given your initial grades and knowledge. So which is THE most important - it’s one or the other, not both. And that objective will likely change a few times between now and graduation. Agree with the others… chill out. Study, do things you enjoy, and grow as a person - outside of class.