Hey Buddy
I am sure the big indian companies SS, SG MRF offer some light weight pads. I owns a pair of puma pads who definitely do lightweight design. My PUMA pads probably best pads iv ever owned they fit like a glove, good for hot days and running between the wickets. Down side is that if a fast bowler catches you above the knee roll, it can sting lol.
Check out a PUMA store if you can in India my advice buddy good luck!