throw some love at it
Seriously, and any dementia is a serious illness, there are positives to caregiving. [See also here]
In the midst of declines and the unpredictability of what I am experiencing, staying clear of depression is a necessity. Holding onto the one reason I am here is too.
So reassuring him and me with a stream of “I love you so much” becomes a tool for the best. It helps keep me focused.