I think being in India the standard is to care for the elderly in home, a hospice service may or may not be available depending on whether they are in a big town. Your grandfather needs to have pain management likely he is not sleeping because he is confused and in pain. Do talk to your drs. And ask for strong pain medication this will likey help him sleep and not suffer. The suggestions given for the type of medication is good. There may be different names for them in India. Good luck with everything.