Hi evgeniypd95,
Before I can offer you the specific advice that you’re looking for, it would help if you could provide a bit more information on how you've been studying and your goals:
Studies:
1) Have you used any other study materials besides the books you mentioned?
2) How have you scored on each of your CATs (including the Quant and Verbal Scaled Scores for each)?
Goals:
3) What is your goal score?
4) When are you planning to take the GMAT?
5) When are you planning to apply to Business School?
6) What Schools are you planning to apply to?
GMAT assassins aren't born, they're made,
Rich