That is sad to hear that the inflation rate has been so dramatic. It has to affect your profits on your Air BNB as getting gas is becoming four times more expensive and taking two weeks when it used to be two days. It sounds like a big mess in the making, hopefully things improve.
An induction stove will certainly be a safe backup if gas becomes an ongoing problem. Or becomes even more expensive. Enjoy the rest of the trip in Japan and your time in Mumbai!
RE: Indian Rupee under great pressure