Adjustment to new situations takes time
but transistional plan sounds good. The goal is not to be 'as you were' but to have adjusted to the new situation in 8 weeks, is that right? To
be then connected into more home help (council maybe) if you need it. Maybe other things like taxi card if Mum can no longer drive, or a meal delivery service a few times a week if cooking is now too hard?

Your Mum may appreciate it if she can keep her usual routines then (hopefully) accept some help on top. Eg washing day still Monday. She sorts it but someone else hangs it out. She writes the shopping list, but it get's delivered maybe?
So it will still be her home, her way, just with "the help" 🙂

Best of luck! I bet in 8 weeks you can look back & say Wow, look where we are now.