People don't get too much Vitamin D, generally speaking. Too often people don't have enough of many things in their diet. More often than not, people have too little of too many things and not too much. Plus, hypothetically, it is better to have too much of certain things than not enough of those certain things. Yeah, 1 to 2 hours of daily sun or at least 30 minutes for some people perhaps. Yes, isolation from those who are sick is critical. And if you do get sick, the same thing, isolate yourself and get better before spreading it to others.