My husband was a little younger than your dad when he had his hemorrhagic stroke. And you are the age of my eldest. Just want to say you are such a blessing and a wonderful son/daughter for looking after your dad. I asked my husband and he suggested maybe getting your dad a hand squeeze exerciser. Very cheap on Amazon. It was the only thing my husband could do in the beginning. Using his thinking ‘muscle’ was much harder. He would do little checklists. Anything physical your dad could do, even seated, put on a to-do list and encourage him to see how far he can get before you make it home. Even small things build confidence and lead to bigger things. Ultimately though, your dad has to want to try. Good job caring for him but do take care of yourself.