There are many ways to decrease your fees in SRM indeed. I will consider that you are someone who got into SRM with no scholarship.
One way is to be among the top 3 students of your class. When I was in SRM the guy who had the highest Gpa got around 38k as scholarship which was eventually desucted from his fees followed by 12k and 6k for 2nd and 3rd tank in the branch.
Hope it helps and all the best