My husband's name is John and he is born in August 11, 1959

He has been been diagnosed with young dementia since the age of 51. Since the age of 49 he has been acting strange like forgetting the normal route home, possessive, sudden violence. After he was diagnosed and after proper medication, he seemed to be under control and relaxed. By 2017 he couldn't walk and feed himself and is completely reliant on me. Even though he can eat a lot yet his body has become very thin and bony. I wonder what is his future this year ?