Let us know how it goes.

Here's an example of what can be done.
One of our neighbors has complex health problems, including early onset dementia. She shares a home with an old friend and has daytime helpers about 30 hours a week. The helpers' job is mostly to help her focus and decide how to manage her life.
Left to herself she gets hopelessly confused and frenzied, but with her helpers she can organize her day and stay fairly stable. Her memory for "things to be done today" is pretty good, but she can't organize, plan and set goals without help.
The current situation is manageable and preferable to going into memory care. She has many friends close by and loves to help garden, care for animals and such tasks that support her need for purpose and sense of place. I don't know the details, but the family worked with local care providers to come up with the current arrangement. It took a few trials, but when the right home help people were found, improvement was quick.