Thanks for the update Vicky.
His grandparents are just like most people--resistant to change. Thankfully, most younger people are growing accustomed to having male nurses take care of them.
I've worked in a nursing home as a nurse and every day it's "hi doctor", "are you the doctor", "YOU'RE A NURSE???"
And they never remember from one day to the next so it's over and over.
Tell him good luck and he's always welcome here with any questions...