When to move Alzheimer's patient to facility?

When a person with Alzheimer's dementia can no longer safely live alone and has no one available to provide sufficient assistance to ensure a reasonable degree of safety at home, then it is time for that person to move to a facility that can provide the level of care required. Obviously, there's a lot of complexity in making these decisions that will be dependent on individual circumstances.

Not sure of what you're really asking

If you have to ask, it's probably past time

There is a time when people have waited too long. You want them to adjust and except that the facility is there home.