My mother’s hospice nurses recommended leaving a light on in her bedroom when she started hallucinating; the shadows present without a light would morph into animals or people.
We also made picture books from photos taken 40 years earlier, and she enjoyed looking at them with us because she recognized everybody and every place.
I sincerely wish you and your family strength during this incredibly difficult time.
Seems like you and I have read the same articles/research. :)
Your best wishes are greatly appreciated.