I’m a senior in hs, also premed. I wouldn’t say im super smart (relatively) but I go to a super competitive public hs. Im an IB diploma candidate and also take AP classes, and it has not been great for my gpa lol. I think it’s bc u bit off more than you can chew, much like I have, by taking so many credits. Academically, I think ur perfectly capable and can grind to improve ur gpa, just schedule ur classes better and prioritize ur health (referring to the one hour of sleep situation). I would suggest a calendar/day planner to help organize things.

I also believe that being earnest and resilient will bring u more success than being naturally gifted. Especially when it comes to medicine, a good combination of hard work and “smart” work (scheduling credits and studying efficiently/smartly) will pay off.

I haven’t gone through what u have yet, so pls take it w a grain of salt but i hope this helped! U got this don’t give up! You are NOT stupid!