Income Tax for rented property

I have rented my house  for this  i am getting rent  every month . i am  receving  rent through bank account  . i shown this income in my incometax  every year , due to Covid 19  . i totally  discounted  two months rent  for my Tenant , my doubt is  can i  less that  discounted rented  amounted  in my income tax  or i want to show  12 months rent in my income tax  for this year . kindly answer