It depends on how you go about studying. If you compare it to taking a class, think about why the class only lasts like 10 weeks (circa), its because if you spend years preparing for it, you might forget everything come test time. However, if you have the time to study, and you study diligently, not going balls-to-the-wall this early, i feel it can be done, it all depends on how much you focus your attention, which might be hard being that the test is a year down the line.