I'm so sorry to hear about your dad, Sharon. It is really tough to look at the loss of a parent. My mom is my best freind and she has EC as well. My first instinct when she was diagnosed was to grill the doctors about "what is going to happen next?" but I found that the most professional doctors caring for her wouldn't even talk about predicting her future. They don't know what is going to happen, each individual is so unique that it is impossible to accurately predict outcomes or even how each patient might respond to each drug. All they would say is "we are going to prescribe this drug, that is created to do ....." The nurse called frequently to ask about side effects but didn't say "this will probably make you sick, or this will make your hair fall out, or this should work". They made no predictions about anything. She has one of the best thoracic oncologists in the region and he frequently says..."I just don't know what will happen for you." At first it was scary but it has turned out to be a wonderful thing...even though her stage IV cancer didn't look good and she was a very 'fragile' person (just over 100 lbs to start with and almost 70) she has improved HUGELY since she started chemo. She hasn't been sick, hasn't lost her hair, has GAINED 15 lbs back and the tumor and cancerous lesions are all 'substantially' smaller. Because her doctor didn't tell her what her path would be, she chose to believe she would get better, and she has. I'm not saying to be in the dark about drugs and what they are supposed to do, but if your dad's doctor says "he has 3 months" I'd suggest you get a different doctor that doesn't think he knows the future.
"I would rather live my life like everything is going to work out GREAT and be wrong than live it like everything is going to fall apart and be right."