Hello Banana
Sorry to hear that your Dad is having a difficult time...being 76 is hard enough without having PD to cope with. But its not all bad news and the main thing he has going for him is the support you are obviously prepared to give him. Your Mom maybe finding it hard to accept...lots of people are like that. I know this because my own wife shys away from anything to do with illness and it leaves me feeling quite lonely sometimes. I am 73 and apart from the PD which I have had for more than 7 years I also have Chronic renal failure which means I will have to go onto dialysis sometime soon. But I have got used to it and try to get over the bad days by looking forward to the good days
The thing to remember is that your Dad will get worse but really quite slowly. Having the shakes, tremors, facial rigidity and other things associated with PD are not nice but given a bit of time and patience can partially be overcome with the medication and through his own efforts. For example - when my jaw becomes stiff and moves out of control I chew gum. It may not work for some people but it works for me because it is giving my mouth something to do. I mention this one thing just to show how sometimes simple things can resolve unpleasant things.
Try and make sure your Dad doesnt give up and fall into depression. Help him have a bit of self respect and make his last years happier than they they have been.
Not much help I know but take it easy and dont worry...its not so bad ....I promise
God Bless
Billy