Read some books on Speed Reading and improve your reading comprehension. Moreover do increase your vocabulary, which might be another reason that why you are rereading.
Devote atleast 1 month on this and parallely invest your time in learning math basics rather than doing actual questions.
After 1 month start doing actual practice and I am sure you would see a +ve difference in your reading habits and problem solving skills.
Thanks for your advice. I will try to do that.
I math I think I know the basics it's just it's been a while since a finished high school and I forgot all the tricks. but I''ll to review everything in the same time. I have 2 more month till the exam.