It is natural for a parent to be concerned when a child is not doing well or when the entire family cannot be together.... I would suggest that you try your best to focus on the present and not the future as we do not know what it holds.... but we are in the here and now and that is all we have any control over.

Might I also suggest you look into obtaining some counseling for your younger son so he can better cope with the emotional trauma he has suffered due to the physical & mental health of his older brother.

I will be keeping your family in my prayers.