How to increase my SAT score by 100 points in 2 weeks?

When I take practice test I score around 1300 ( NEW SAT ) 750 Math and 550 English
Still only have 2 weeks tell my test ( OCT 1 )

I use khan academy and Barron’s.
How can I increase my Math score to perfect ?
How can I increase My Reading and writing score by at least 50-100 points ?
I don’t have problem with time.