Yes,I felt that time nanagerment is very important, so in the perio of time when you are preparing for test, why not do sth.like essay writing and modification, see some aluminy of b-school to know more about the field, or join some activity such as infor session hosted by some schools? I confess I did some wrong plans before my application beginnig from July this year, but what we can do is not grousing sth., but do more to make up for those which can't be changed.