Hi natashakent,
Since you are interested in at least one highly-competitive School, you would likely find it beneficial to speak with an Admissions Expert about your overall profile and plans. Those Experts should be able to answer your Admissions questions and help define the specific areas of your profile that could use some improvement. There's a Forum full of those Experts here:
https://gmatclub.com/forum/ask-admissio ... tants-124/Many GMATers find some aspect of the Exam to be challenging - so you're not alone. Thankfully, the GMAT is a consistent, predictable Test, so you CAN train to score at a higher level. You'll likely need more than just another 4 weeks of study time to get to the point that you are consistently scoring at a much higher level, so you might want to consider pushing back your application(s) to Round 2.
Before I can offer you any additional advice for your studies, it would help if you could provide a bit more information on how you've been studying and your goals:
1) What type of study routine do you follow? Over the last 3 months, how many hours do you typically study each week?
2) What study materials have you used over the course of all of your studies?
3) On what dates did you take EACH of your CATs/mocks and how did you score on EACH (including the Quant and Verbal Scaled Scores for EACH)?
4) What is your overall goal score?
GMAT assassins aren't born, they're made,
Rich