Many a times i ve read at this forum 2,3.4,5 months is sufficient.Wat other people fail to realize is the context in which they ve studied.
Believe me to start preparation rite from scratch a preparation 10-12 months is essential for an average student or start from day 1 of ur articleship.this flat 10-12 months is required for students preparing without any coaching. this is the only way u can do justice to each subject.
if u ve already done with coaching and ve clarrified ur concepts,the 3-4 months is more of revision than ACTUALLY STUDYING.
So its inappropriate to ask some one or adopt some else's theory of studying for 3 or 4 months without actually knowing their background
But considering the current context of nov 11 exam ur article is good.