I need some SAT score raising help

So in the beginning of the summer I took the first practice test from the blue book and got a 1430. I studied a little (was extremely busy during the summer), and I took practice tests every other week and saw my score go up and down. My latest practice test was #5 and I got a 1430 again (710 R&W, 720 Math). I’m trying to get 1500+ What can I do to improve my score by at least 70 points, before the next test? The mistakes I’ve noticed from taking these tests are: Math- forgotten geometry knowledge, takes too much time to figure out how to solve the problem, I take the hard route instead of the easier route unintentionally. For reading- the history and literature passages due to complicated prose (I read a sentence with an excessive amount of big words that’s used to just describe 1 fence post or something and I get confused. I then proceed to spend a lot of time rereading that sentence to comprehend what the sentence is trying to say, only to then find out it was not an important sentence.), also understanding what the passage is about. Writing- punctuation and “using other words to replace the underlined word” type questions.

TL;DR- I have a 1430 and I’m trying to get 1500+. What can I do to improve my score by at least 70 points, before the next test?

Thats a big jump and unlikely. What was your highest practice test score breakdown?

For the reading, read the question first before reading the passage so you know what to look for.