hi,

see if your basic concepts is clear and you have solved a vast questions then your preparation is good even if you have not taken any coaching tutorial. next you have to understand which of the areas is most scoring and have most chances of questions. so analyze the previous years papers and make notes. I also suggest to make short notes of formulas which is best to revise before the days of exams.

besides learning lectures revise the old problems and theory parts. you may follow mtg publications books for practice mcqs.