Hey rajatbanik
So you want to go from 340 to 650. Such a large improvement is very difficult. However, some very substantial improvement should definitely be feasible.
You will need to build yourself a study plan. But first you must ask yourself - what does the GMAT actually check? The GMAT is all about measuring mind flexibility – or in other words, it’s about seeing how quickly you can get to the right answer. Remember, the GMAT is no ordinary test. The GMAT exam doesn’t measure your knowledge, it measures your “mind flexibility”. Therefore, if you wish to excel in the GMAT, it’s essential you work on sharpening this cognitive capability.
Each question serves up a different twist: a different level, uses a different set of tools, has a different length, tells a different story, can take from a few seconds to a few minutes to solve. But, most importantly, it presents us with questions that can be solved in many different ways. You just have to be fast enough and answer correctly if you want to have a chance to solve as many hard questions as you can in the limited time you have (hard questions generate higher scores!). You must be fast and correct. What counts is finding the tools that work best for YOU.
So what could and should a study plan look like? And how long should you prepare?
Familiarize yourself with the exam – What is the test structure? What are the formats of the questions?
Focus extra practice time on your areas of weakness – What matters is getting to the correct solution, fast: the problem is that just solving lots of questions (with practice tests or coaching) is not sufficient in terms of improving mental flexibility. Actually, the opposite is true. Solving thousands of questions without improving your mind’s flexibility will only cement the wrong thinking patterns.
Train yourself to find YOUR best solution approach to answering GMAT questions – The GMAT measures your ability to flex your mind.
Researching your errors is even more important than solving new questions – Which tools am I using betters than others? What are the main reasons for my mistakes? Which other tools should I learn to apply better? And when it comes to verbal questions, it is also crucial to analyze the answers: why is the correct answer correct? What is wrong with the wrong answers?
Practice test should be used as tools for improvement, not just to see “where I stand,” which means that you should allow 4 hours of research for every test, and not take two tests in one day, one after another, so as to allow yourself some time to strengthen your weaknesses and prepare for your next opportunity to improve.
Hope this helps!