Took SAT for 1st time in May, how can I improve for June?

Hi, so I took the SAT in May

Got
600 CR
580 M
490 W ( 47 correct, 8 on the essay)

For a 1st time, I’m happy with the CR+M, I know I can probably boost those at least 50pts each if I just find out my weak points, but I’m unhappy with the writing.

I’ve never really completely memorized all the grammar rules, I’ve sat down and looked at them, but whenever I do, they all just kinda blend together.

So, with two weeks to go, what should I do to improve my scores? It seems like Writing should be the top priority as to where I put my study efforts, but I also want to try improving the CR+M as well.

Disclosure- I’m aiming for a 1900-2000. Trying to get into University of Texas at Austin.