turtle kid....it may be related to disease progression - only the physician is able to answer this question correctly.
Sometimes it is difficult for us to understand the actions of our parents, but in this case, your Dad may very well want to stay in control of his life. The question one asks is what the reasons are for your Dad's reluctance of not taking on some of the options presented to him. Is he frightened, unsure of what an intervention might mean to him because; he is not informed, or is he determined to follow his own path only because that is what he wants to do?
Does your Dad have a physician he trusts? If so, then this would be the person to explain to him what disease progression entails and how certain interventions will work to his benefit.
Just a thought, dear turtle kid. You are a caring son and you must know that you are working with a difficult situation.
THIS INFORMATION IS NOT INTENDED NOR IMPLIED TO BE A SUBSTITUTE FOR PROFESSIONAL MEDICAL ADVICE. YOU SHOULD ALWAYS SEEK THE ADVICE OF YOUR PHYSICIAN OR OTHER QUALIFIED HEALTH CARE PROVIDER