What were the first dementia signs you noticed?

My husband has vascular dementia as a result of at least 7 TIAs and 1 larger stroke as shown on an MRI. The only one we were aware of was a TIA in 2016. I'm guessing that some or all of the others may have happened in his sleep because there were no obvious signs like there were with the 2016 one.

Anyway, I've been thinking back to things that seemed "off" well before I started suspecting a problem. One thing was that he started mixing up pronouns. He'd refer to a female pet as "he" and vice-versa. He still does and he mostly does it with animals. He'll also tell a male pet that's he's a "good girl" and vice-versa.

When it first happened, it became a joke, but now I wonder if that was one of the first signs that something wasn't functioning the way it should. I'm curious if others can think of things that seemed "off" before the problem became obvious.