Tenants (Father & Mother) in ill health

[Michael R.]

I inherited tenants in a recent house hack purchase who are in ill health.  The mother is in the hospital and it's not looking like she will make it much longer.  The father had a stroke, and is receiving home healthcare. They have a 24 year old son who takes care of the father as well, but is unemployed at the moment.  I really feel for them, and think it's commendable what the son is doing to help take care of his family.  The first rent check was a couple days late (the son delivered it) and I had a brief discussion with him to see how we can make sure he A) pays on time from here on out and B) has a plan if, heaven forbid, something happens to his parents.  

It's the parents' names on the lease.  In the event that the parents pass away what options does the son have?  How would you handle this delicate situation?