Old people are generally afraid of cold. When grandma comes to live at home, it's best to leave a room facing the sun for her old man, with thick bedding on the bed and some thick coats for grandma. Old people miss the past. If possible, they can also prepare some small things that grandma likes to put in the room, or books that grandma likes to read, so that grandma can read them in her spare time.
In terms of food, you can prepare more meals that grandma likes to eat. Don't put anything spicy and exciting. Old people generally have a poor appetite and are not suitable for eating irritating things. Every meal, you can fry a few more dishes that grandma likes to eat, and make them as rotten as possible for the elderly with bad mouths to chew.
Try to take care of the rest habits of the elderly and go to bed early and get up early. Moreover, the elderly generally sleep shallowly and don't like to be disturbed, so when grandma is around, try to make use of the time of the elderly to go to bed early at night. You can chat with the elderly before going to bed to deepen your feelings.
If grandma is in poor health, she can ask an hourly worker to take care of her during the day. In case something happens when you are away from work. The hourly worker can invite a skilled and experienced person to take care of the elderly's diet and daily life, and chat with her to relieve boredom.
In short, the most important thing to take care of the elderly is to have a heart. As long as you spend more time and thought, grandma will definitely feel it.