Please help me out by giving your insight on the right source to practice so that i will hit the bulls eye within a 3-4 month period.
One doesn't lead to the other. If a high quality material and 3-4 months was all that was required to hit 'bulls eye', most people would have been hitting it. How well you do will depend on how well you use the material.
The most commonly used source for practice is the Official material. Since it is limited, most test prep companies give you tons of questions to practice - all based on the official material.
In addition to that I want a time schedule, can afford to spend 2 hour on weekdays and 4 hour on weekends. Now I am score hovering around 550...
Another misconception - Some people get 750 without ever looking at any test prep material. Many others stay stuck at 500 even after 6+ months of study. Again, there is no standard time schedule that helps. It all depends on how well you use the time you have. Focus on your concepts - understand 'why' for everything first. Then focus on practice.
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