How lenient is Indigo staff is for baggage policy?

I have a domestic Indigo flight in late night. The flight seems to be almost booked. My check-in bag weighs ~300g more than 15kgs (i have tried to remove what all i can). Will they allow it?

I have a hand bag and laptop bag too. They have never weighed hand bag and laptop bag before for me. My hand bag is like ~8kg.

Any suggestions?