Depends on whether they are Hindu, Muslim, Sikh, Christian etc. and how orthodox they are.
But taking off your shoes and storing them in the shoe cabinet before entering the house, doing a 'Namaste' every day in the morning or whenever you happen to meet them, returning home before dinner etc. should be enough in my opinion. But then again, it depends on the family. They might not mind any of what I mentioned or they might be very stingy (hopefully not). Also, welcome to India. And Beware of the COVID-19.