is there a free site to test for dementia?

Start writing notes. One of your notes should remind you that you're trying to remember which of the notes you actually remember.

I have dementia. Right now, a team of programmers are building a sentient AI bot that is being modeled off of my personality, experiences, etc. By the time it's finished, I'll have faded too much to see the results, unfortunately, but it may take over this SW account and my online presence in general.

I think so...........but I forgot.

You've asked this like six times.
(Sorry sorry sorry sorry sorry...)

Here's one. https://www.psycom.net/dementia-test/