Dale Carter from Transition Aging Parents blog has recently come up with a great 5 part e-course, "Five essential strategies to help your aging parent face change."
I can't think of anyone who has (or will have) and elderly parent(s) that would not benefit from it. The course comes in 5 separate emails spread out every few days so that you can read them on your time. I found it to be well written and helpful. If you have never done this before, you certainly should get some help from someone who has been there, done that...
The link to her website and e-course is : https://www.transitionagingparents.com/