I always read the Sunday NYTimes Obituaries (only the ones w the pictures;) I just read the obit of Naomi Feil and learned she wrote The Validation Breakthrough. I ordered the book used on Amazon. A lot to read but helpful.
Also my husband has a speech therapist who comes to the house and works on brain games and cognition.
I really work on making him feel valued and respected. Sometimes I slip, but the intention is there.
Hope this is helpful 🙂