My boyfriends father has copd, lung problems, kidney failure and a bunch of other problems. He is a stubborn old german whos set in his ways and doesnt like to listen. He always would occasionally forget to take medicine. He was the 2nd oldest child of 14 kids all of which have passed except his brother who is 20 years younger than him. His brother was diagnosed with cancer about 8 months ago. He would tell me that it wasnt right if he outlived his brother but his granddaugher was coming to visit him from germany and it was my responsibility to keep him alive until she left. He did absolutely everything i said. After he left, medications were skipped more often and he doesnt listen to me as much as he used to. So anyway, hes been seeing dead people and hallucinations and losing track of dates and times. Eating 4 breakfasts a day, etc. Im closer to him than anyone else in his family so we talk alot but he freezes up when others are around. The dementia seemed to hit fast like a 2 week period especially when its dark out. I guess im trying to figure out if dementia symptoms can progress that fast or if maybe it was always there but hes lost his will?