I'm tired of school and I'm tired of going to school and I don't know why I'm feeling this way.

I'm a sophomore in high school. I have ADD, generalized anxiety disorder, and mood disorder (I have symptoms of bipolar disorder and depression). I take vyvance, latuda, and vybrid for all my issues. And I see a therapist once a week and a psychologist. In middle school I got A's and B's and loved school and had a lot of motivation for school. But last year I did all the homework but I didn't study for any tests and quizzes cause I didn't feel like it and school started to become boring to me and I became less motivated. Now I'm in my second year of high school and I have zero motivation for school. I don't want to do homework or anything. I wait all the way till night time to do my homework and then I get really stressed out. I'm just tired of going to school and I'm tired of doing the work and it's just boring to me and I don't have any interest or motivation to do it. I don't know why I feel this way or why or how I lost my motivation for school. I've talked to my parents about it but they just say I have to go to school cause it's the law and I know that. Also I've been crying about school for the past week everyday. I just don't want to do it anymore. I'm done. I don't want to feel this way and I don't know why I'm feeling this way. I just want some help. If anyone has any suggestions to help I'd appreciate it.