As per my experience in these years, a person would required atleast a month of training to get 8 band provided his basic English skills are apt. Secondly, if someone is a beginner in this course, they should invest 2 months before appearing for the exam.
I also provide lessons for a particular module (reading, listening, writing and speaking ). Also, I can evaluate your writings and give you a detailed comments as per the band descriptors.
For further details contact- 7987362235.