Nothing prepares you for this, parenting your own parents. Your mother and father have always been the strong ones, the older generation, dependably there (if you’re lucky) for you all your life. Then comes the time when they need you as their bodies and minds (sometimes both) fail them.
Old age as Bette Davis once said, is not for sissies. Neither is watching it happen to one you love or having to care for a once strong, thriving parent as they fade away.