If he has a doctor, call the doctor and ask if there is a local hospice. If so, ask the doctor to have one of their staff evaluate your father in law. Medicare recognizes Alzheimers and Dementias. Your father in law’s condition would have to meet the criteria established for those in order to be admitted to a hospice. Hospice could then offer suggestions, etc to your family. A person only has to have a life limiting illness with an expected prognosis of six months but that doesn’t mean that services would end at six months as long as he continues qualified. Once a person reaches 7 on the Dementia scale, they may remain on hospice as long as needed.
Please do not call Hospice. It would NOT be appropriate at this time. Someone needs to go out there and see what is going on. No one else can do this appropriately but family.