You don’t say how old you and your wife are. But your son is young and he shouldn’t have much problem with COVID (although there is no guarantee). I take a daily regimen of D3, C, Zinc w/Quercetin and Melatonin. I also have a doctor who does not think I should get the vaccine (he’s aware of the adverse affects and told me about VAERS). He prescribed Ivermectin, which I took during my bout with COVID. Still was a rough go (I’m 70), but I have a nurse wife who kept me moving and hydrated. Your son should be fine...just keep him isolated.
Stop the testing for the sniffles. It’s a cold. It’s never going to end with people running to get tested because they have a cold. They don’t give you anything anyway. Drives me insane.