Had score 720 in GMAT prep taken 2 days before the exam however actual score came much less.
Did you take that test under 100% official conditions, including essay, IR, two breaks limited to 8 minutes each, etc? If not, then your practice score may have been artificially inflated. If that's the case, then you may need longer than 1 month to get yourself to that kind of scoring level - just FYI.
What else did you do in the last 2 days? A lot of people do too much and tire themselves out mentally; then, they don't do as well on the real test. Here are some signs of mental fatigue:
https://www.manhattanprep.com/gmat/blog ... you-crazy/Did you experience much of that on test day? (Everyone experiences some mental fatigue, of course. The question is how much.
A lot of people also find themselves so nervous on Real Test Day that the revert to practices that worked in school but that will get you into trouble on the GMAT - such as spending a lot of extra time on some problems (that are really too hard) and then rushing on others to catch up (that you know how to do...but now you're making careless mistakes because you're rushing). Could that have happened?
Are you planning to order the Enhanced Score Report to see what your general strengths and weaknesses were on the real test? See here for more on what this is:
https://www.manhattanprep.com/gmat/blog ... re-report/If so, send us that data.
In the GMAT exam last 10-15 questions I felt I was not able to give proper time. And the last 3-4 questions were almost a blinder.
This is actually good news. If you still scored a 670 even with this going on, then there's a good chance you can get to 700+. But you're going to need to change your mindset.
Everyone has timing issues on this test. Nobody can get through every last problem spending all of the time that they want to spend. The GMAT is primarily a (business)-decision-making test: how do you want to spend your limited resources? In business, that's time and money. On the GMAT, that's time and mental energy.
Read this:
http://tinyurl.com/executivereasoningWas that your mindset as you took the test? And as you studied for the exam? If not, what do you need to change to make that happen?
Pretend you're the CEO of a company. Each question that pops up on the screen is someone knocking on your office, asking for money or asking you to do something for them. You say yes to some, maybe to others, and no to others. You don't feel bad about saying no - you know that you're in charge and it's up to you how to spend the company's precious resources.
In the same way, you do NOT want to do every question they throw at you. And you shouldn't feel bad when they do throw something at you that you don't want to do. It's not your "fault" - not at all! You are in charge and you are making unapologetic decisions about what to do (and how much effort to give it) and what not to do at all. Period.
If you'd like to get some more detailed advice on study plan for the re-take, First, read these two articles:
http://tinyurl.com/executivereasoning (this is the same one I linked above)
http://tinyurl.com/2ndlevelofgmatThink about how what you've been doing does and doesn't match up with that and how you may need to change your approach accordingly.
Then, use the below to analyze your most recent MGMAT CATs (this should take you a minimum of 1 hour):
http://tinyurl.com/analyzeyourcatsBased on all of that, figure out your strengths and weaknesses as well as any ideas you have for what you think you should do. Then come back here and tell us; we'll tell you whether we agree and advise you further. (Note: do share an analysis with us, not just the raw data. Your analysis should include a discussion of your buckets - you'll understand what that means when you read the last article. Part of getting better is developing your ability to analyze your results - figure out what they mean and what you think you should do about them!)