HI shubhamg266,
To provide the best possible advice, it would be helpful to learn some more about your GMAT experience and MBA goals. I have a few questions:
1) What is your GMAT score goal?
2) Do you have a list of schools to which you plan to apply? Have you researched the applications deadlines for each school?
3) Describe your study routine. For how many hours a day have you been studying and for how many total months? What resources have you been using for your prep?
4) Have you taken any official MBA.com practice exams? If so, can you provide us with the dates and score breakdowns from those exams? When you took the practice tests, did you take them under realistic conditions (e.g. in a quiet environment, no extended breaks)? Did you complete the entire CAT, including the IR and Essay sections?
Once we have some more information, about your situation, we can provide some advice on when you should plan to take the GMAT.