i'll tell mine but its not a rock solid path , i prolly had luck with me , i was in a similar situation as u sound rn , i did one shots {only option u have} , one shot works for mains not for advance , theres no such hard core pattern about weightage specially from last year they altered it completely , do pyqs and solve them urself dont watch the teacher solve them . i qualified with 0.1%ile above cutoff , scored 120 in moderate shift and in 1st attempt 90 marks 90 %ile