My grandfather is 89 years old he has signs of dementia, COPD, Heart Failure, and many other problems. My family is dysfunctional. It looks like he may not survive. I have been helping my mom take care of him for years. He's been moody lately since he can't remember anything anymore. He took it out on me and mom. He said pretty vulgar comments im not going into detail. I'm worn,tired and broken. Advice?