Hello, Ozlemmetje. I am sorry to hear you are not scoring where you want to. While there is no one study strategy that can guarantee you a specific score, we have done some research on GMAT test-takers and their study habits:
https://www.mba.com/us/the-gmat-blog-hub ... -gmat.aspx. We have found that students to study more tend to do better on the exam, so the best suggestion is to use your 2.5 months to study hard!
I also suggest you re-post this question in one of the main forum threads. This thread is to ask questions for GMAC, the makers of the GMAT exam and unfortunately we cannot offer you specific study strategies. However, if you post in the main forum, other students and test prep tutors will be able to offer you additional study tips and advice.
Good luck!
Leah
Official GMAC Representative
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