So, new approach to my father's situation. My stepmother asked me to now specifically try to keep him busy (but not go overboard)... after all, sitting in his chair by the TV may not be "stressful", but it's also definitely not healthy to do all the time. Not exactly helping his situation. Trouble is coming up with stuff to do (aside from playing chess as I've already mentioned). Hmmmmmmmm. Gotta ponder that.