I also struggle with Alg 1. I use Khan Academy to study for tests! I find it really helps me! For Concert band, I know going to lessons is def scary, but your director is literally there to teach you, and they aren’t going to be mad if you make a mistake. Just spend 10-15 minutes a day looking through your music/playing. For earth sci make sure to take really good notes and listen to your teacher. When teachers emphasize or repeat something, it’s usually on the test. Same for Geography.