Yes, the bank will help you. You can switch your rate of interest as per the following switching amounts:
Fees while switching from higher floating rate to lower is 0.5% of the outstanding principal
Switching fees from floating rate to fixed rate of interest: 1% and cannot be greater than INR 10,000
Fees while switching from higher fixed rate to lower fixed rate is 0.5% of the outstanding principal
Switching fees from fixed rate to floating rate of interest: 2%