Of course, a person does not want to lie in bed until his health fails him. Because I completely agree with you that your father-in-law thinks that if he stops working, he will not be able to remain active. Because a person falls ill more quickly while sitting and those who do little work, their body remains active. It is a great pleasure to take care of your father-in-law along with you, just like your parents. These in-laws of yours must also be feeling proud of you.