u/Incrementy

I’m a sophomore currently prepping for MIT PRIMES
I already have solid knowledge in Number Theory/Combinatorics(can solve most usamo p1/4’s and half of p2/p5s)

I did a little bit of reading on abstract algebra and got the basics down like rings fields ideals etc
I know some linear algebra but not too deeply.
I don’t know much calculus/real analysis

What are your recommendations to prepare for the PRIMES USA entrance exam? What material should I work on?