I need advice 😔

I love cheerleading. I am going into highschool this year as a freshman so I decided to try out for cheer. I made Freshman Sideline which is normal football cheering. Anyway, recently my stunting got really really good. The Varsity Competition coach noticed that and I had a “try out” I made the team and the Varsity Sideline Coach also put me on her team. I didn’t realize the time commitment. I will basically be having practice every single day besides Saturday and Sunday. I will also just be going into highschool and homework and I have a boyfriend. I really do love him, it’ll be 2 years in November. I have to make time for him too. I’m just really really scared because I want time to do things, not just cheer you know? And I cannot stand when my grades are below an A. Is highschool as scary as everyone says? Please just give me advice, I feel like if I talk to my mom about this she will think I’m dumb for being on both teams but I really like cheer.