Nothing prepares you to eventually become a parent your parents.
One day you are calling them and letting them know how your day went, the other day you are calling them for the same purpose but you stop, because now they are telling you how Mom’s physiotherapist needs to be changed, how Papa needs to alter his diet at the age of 70, and how the very act of living has become a prison for them. It is a day no one prepared you for, and it sometimes makes you question what you can do for them, other than providing for their comforts and letting them know you are there.
For your inner battles of seeing this, maybe one form of love is letting your parents just be, and being at peace instead of breaking into pieces.