Induced Alzheimers to improve memory recall

I have been thinking about some people I know, including Family members who have alzheimers and they way their memory regresses to earlier years and even their childhood as if the events were current for them.
It seems to me that some part of the brain is turned off for current memory/events while another is turned on resulting in previous memories coming forward.
My thinking is if we can discover how the ‘old memory’ part of the brain has been turned on could we possibly find a way to turn it on through conditioning or medication?
The medical and scientific world are developing amazing tools and medications to stop or atleast reduce the effects of the ‘turning off’ process so hopefully this could also give them some clues with the ‘turning on’ part as well.
I am hoping that someone with more medical knowledge might be able to shed some light on this and confirm or deny the feasibility of this theory.