Teen burnout, GPA pressure, too many goals, and feeling super stuck and stressed - how do I reset without losing my ambitions?

Hi. I’m 14 (turning 15 soon), and I’ve been dealing with what feels like serious burnout for about 7-8 months. I hopehope getting real advice from people who’ve actually gone through this and came out functional. I've made many progress in life for the past years before this all happened. As a music producer 've made it to a 80 thousand listeners record label that even paid me some money through a contract, I won some school Olympiads and engaged in academics. I just simply loved the studying process and was good at math, physics, geometry. I loved science and liked making games. I used to be very driven. Not “gifted kid perfect,” but consistent and excited about things. Life was colorful. Before this school year I studied like I could and my grades weren't as good. I built creative projects for fun, like: programming, game dev, music, videos on YouTube. I ran small online communities. I learned skills because I enjoyed progress​​​. I even started doing sports.. So I kind of did A LOT. Simply A LOT. And am still doing it. Sports, academics, music production, videos, game development are the main niches. ​ I could feel myself slowly become not happy about my results and wanting more, constantly comparing myself to others. That was some maybe burnout, maybe not I could handle. But what happened this year merely changed my perspective on everything. Despite having a lot of projects and load, studying in one of the best schools in our city I realized that i want to get into a good university. I have seen some things about universities. No..i mean, I always wanted it get into a good university, before this year. But I realized how much GPA and academic records matter for future opportunities. And well, guess what, I never focused on school grades as much before as I wanted them now. I became OBSESSED with school marks, like they decide my identity as much as my projects. ​​​​But school doesn't work with same system as projects. In school you actually need to simply do boring work consistently, not like you need motivation. After that I crazily slipped and ruined my 9th grade transcript.. And the grades + school are really simple compared to the stuff I study outside school... I'm stuck in a cycle. My brain has now tied that school to the place where i get most of the stress and now my heart rate rises anytime it's something about it... Something flipped. Since then, I’ve been stuck in a pressure and overthinking loop. ​ And it keeps repeating. What daily life feels like now:

• I sit to study and my brain just stalls
• Subjects I used to enjoy (math, physics, programming) now feel mentally heavy Oh and well, as a P. S., now even projects​ feel heavy. I dropped out of MANY of them not gonna lie, and now I tried to do only school on a daily basis.. It feels terrible. No matter how long I study the math I never get the concept. No matter how hard I push it. Even after rest it doesn't​ work on simplest ones. I also have been overthinking my school preparation sessions, so that I can sit and revise concepts for 4 hours before an exam and then fail it.. So, there's more:​
• I avoid starting tasks because they ffeel..just hard to start, and sometimes I dont start them immediately​
• I'm unsure of EVERY decision I do, I lost ALL of my self esteem, because when I compare myself to my school peers I am feeling behind as of now..​​​​
• I have noticed myself play games and escape into stuff like chess (I used to play it) for the recent times, and so I'm eating time like.. Like I never did before.
• I'm trying to work on something meaningful all the time I can (with rest obv), I'm not sure when to have "a joy block"​​..
• I want every second to be used productively After all, I limited my projects to just gamedev and music, but it doesn't help since I want to still do everything I have skills in, and so continue it..​​ And so:
• I over-plan productivity systems instead of doing the work
• I constantly feel like my brain got pressure spikes on it and it just..hurts​​​​​
• Even fun projects trigger anxiety because they remind me of expectations Most of this messes up andand links with my GPA slipping. I already got a bad transcript, and I'm currently aiming for MIT. But results are not the thing that matters the most..But it turns out I turned them into one. ​ A hard thing to admit: When overwhelmed, I started copying homework answers or rushing assignments just to make the stress stop.​ I’m still ambitious. I genuinely love building things and creating. But I overloaded myself with too many goals and turned everything into pressure. And when I started school lwith that overload, a new grade, new teachers, etc. It didn't work properly.. What I’ve tried so far: • Working in small timed blocks (10–15 min) • Short breaks between blocks • Focusing on finishing instead of perfection​​ • Trying to sleep better​​ Some days this works. Other days I return into gaming and feel like I’m back at zero. Also, I waste huge amounts of energy trying to do everything “the right way.” Noticed that too. I don’t want to quit my goals. I want to achieve them in a low-pressure way. What actually helped you recover? What made the biggest difference? What would you tell your 14-year-old self? I’d really appreciate honest advice or personal experiences. Thank you all so much. < 3

Oh, and it pasted without the spaces so sorry if it's hard to read

Peace​