Fist Brainstorming call is usually scheduled when you feel confident of your prep and you are ready to have a brainstorming discussion.  Without Pre-prep, brainstorming often leads to very basic entry level discussion.  We schedule these calls on alternate days, working backward from your interview date. So, for example, if your interview is on the 10th, we will do the three calls on 4, 6, and 8th of the month.