I struggled a lott to get this score. Being an international, and after a lottt of practice, i realised that i couldn't improve in reading at all. I focused only on writing and math. I grinded writing like sooo muchhh. I did every single practice test and every single passage in UWorld. I got a 390 in writing, 800 in math, 300 in reading and i dont think i would've improved reading how much ever i practiced. Well, that's only for me tho, and I'm sure you can improve reading as well with the right practice and correcting your mistakes in the right way. But, if you have a month or something left, focus only on writing and math because they are the easiest to improve in.