<p>Find out what option he has now in term of forbearance. It is too late for deferral I am almost sure, I am not sure about forbearance at this point though.</p>
<p>At least this will get your son out of default. I would say that even when he is out of default, I would advise to think through a decision to take on additional debt. Everything depends on current debt and future debt numbers.</p>