caljw,
You'll find a number of "what to ask the doctor" discussions in these forums.
One of the basic questions you should ask is what treatment choices are under consideration for your Dad (including giving him only supportive care), which of those he's a candidate for, and how they decide. Next you'll want to know which of the available choices they recommend and why.
Here is a list of general questions a patient might ask, from the Aplastic Anemia & MDS International Foundation (AA&MDSIF).
I suggest that you fill out
this form at the AA&MDSIF website and get the information packet on its way to you as soon as possible.
I wish you and your Dad the best of luck. I hope you can arrange to visit him.