Be accommodating.
At the advanced stage, the Alzheimer's/dementia experiencers needs are many, but their wants are few.  Helen got tremendous joy from the simplest of things; the sun on her face, the wind in her hair on a Sunday drive and, of course, loving her little companion Jezzi.  She loved her dog and Jezzi loved grandma.  Providing life's simple pleasures can be so easy for us and so impactful to them. Throughout our lives we often feel ineffective; putting out great effort and affecting little change.   Within your relationship with the Alzheimer's/dementia experiencer there will be moments where you can affect great change with the slightest of efforts.