You are a junior. You do NOT need to pick a college major right now! You do not need to finalize your college list right now! You do NOT need to worry about taking the SAT’s again this year (maybe take again next fall?).
You should focus on being the best version of you that you can be. Which means doing activities you love or are meaningful to you; taking the classes that interest you and challenging yourself to do well in them; spending your downtime with people who add something to your life (grandparents, cousins, a neighbors five year old who thinks you are the most interesting person in the world), a part time job if you have time/need extra money, reading well written books, articles, poetry, etc. And getting enough sleep and eating nutritious, regular meals and getting regular exercise.
It’s great that you are ambitious, but don’t let getting into college become the focus of your week.