Dad is beginning to have minor memory issues himself, and I wonder if living in an "independent living" facility for seniors is enough. They are in a cottage with housekeeping and meals provided, but NO medical care. Dad is resistant to Assisted Living.
Have you picked out one or two nice ALs for them to visit?
As Jeanne above had suggested, scoop out some the Assisted Living facilities and see what would be a nice fit. But note, after your parents move in, you might see more memory decline. It's just part of the dementia journey, but now you will sleep better knowing your parents are getting another level of care. Now the tough part, convincing your Dad.