I'm sorry to hear about your father. That's one of the toughest things about getting older is watching your parents get ever more fragile. My dad was diagnosed with Alzheimer's about three years ago. He's 8o years old and fit as a fiddle otherwise but hallucinates off and on and is now really starting to struggle. I moved away from them 25 years ago but manage to get back once or twice a year and we've made some good memories throughout those years. I hope you find comfort in those good memories of your father!
Cheers, man! It is hard seeing them become less that they were. I am glad you are getting the chance to make more memories, may there be many years more ahead!