How to get 2250+ on the SAT???? Please someone kindly help and give me some helpful tips. Thanks!

I’m currently taking SAT Practice Tests in the Blue Book, and my scores seem to revolve around 2000. However, I’m trying to get a 2250+ score, if possible. The thing that’s lowering my score is the CR section. I keep getting lower than 600. Sometimes I read passages and I don’t get what the heck they’re talking about, and then I just end up getting like 3-4 questions wrong for that passage. Also, the vocabulary questions sometimes get difficult, but usually I pass those with 1-2 wrong only. Can someone give me some tips on how to raise my CR score from 550 (average score) to let’s say 700+ if possible. Also, can someone give me some tips on how not to make careless mistakes on the Writing section? Thanks in advance to anyone who replies.