Does your kid ever come home to you, and then go back to them? If yes, then these precautions are totally reasonable. If you end up giving it to your kid, and

Does your kid ever come home to you, and then go back to them? If yes, then these precautions are totally reasonable. If you end up giving it to your kid, and you're both asymptomatic long enough that they give it to your parents and they (possibly) die as a result, would it have felt it's worth it then, to not at least try to prevent it as much as possible? Personally I would do what I could not to have your kid have to travel back and forth from your parents at all, but I understand that might not be an option.