How do you cope with Sundowning?

For my 100-yr old Aunt who pretty much sundowns like clockwork we put very bright bulbs in the lights and lamps where she mostly hung out, down the hallway to her bathroom, etc. and turned them on very early in the afteroon before it started to get dark. If she started insisting on "going home" (and it almost always means their childhood home) we'd attempt to distract her with tasks (folding kitchen towels, cutting vegetables), walking her out to her mailbox and back, setting her up with books/magazines that she will read out loud.

We found that writing her house address on a sign where she could see it did nothing since this is not the home she was longing to go to.

Cassies95, my Dad had sundowning and Dad would get into his time-machine and go back to the 1940's. I didn't correct him, I just played along.

I knew where he was back in the 1940's, working full-time, was married to my Mom, and was taking the bus to and from work. He would mention staying at the hotel, which was really his apartment at the senior facility. I would ask him how the meeting went, etc.

There are medications that can help with some of the symptoms. Agitation and anxiety.
Change lighting to LED lights so the room is brighter and there are fewer shadows.
Close blinds or drapes as it begins to get dark. This will cut down on reflections in the glass making it look like there are people looking in.
Finding things to keep the person occupied helps.