Not gonna bore you w/our sit except to say Mom lives with us, 89, and been with us for 4 years. Her alz has been progressing rapidly for the past year.
What you MUST do is find respite care for yourself even if it's only for an hour. You need the mental break from the stress.
Only suggestion I have is to make sure to have the doors locked, especially at night, and a lock she can't figure out how to work. It would be terrible to have her wander off and get lost. My intention is not to scare you but just to warn you.
Hugs!