OP, you dream of Harvard but have you truly looked into what they want to see in applicants? The comment that scores aren’t needed suggests not, as does the idea H is one of very few where you can be surrounded by bright, ambitious peers. Or that offers a top neuro education. We see this often in 9th and 10th graders who have only looked at how they’re doing in hs and what profession they want, who tend to think just being a tippy tip school is enough info to target a college. You have work to do.
Tons of kids have a challenging back story. Tons claim they want to be docs because someone was ill, their hearts are so big that they want to save the world, they raise a little money, do a little volunteering, found some club, get any old titles in hs clubs.
You don’t get in because you have a tough back story and really, really want some career. It’s about what you accomplish. And how you think. Show, not just tell. It’s a big world out there. Limited thinking is a risk.