Along the same lines of the title:
Whenever one of my parents call they either ask about their grandchildren straight off the bat or ask how I am as a heicha timtzah to ask how their grandchildren are doing.
I remember a time when I used to be the most important thing in their lives, now I am nothing more than a grandchild producing machine relegated to the sidelines until the next delivery when I will be given a quick mazal tov and then summarily ignored for the reminder of their stay.
I will at least try to always ignore my children this way they won’t feel bad when I do it for my own grandchildren. Also, in concession to the title of the thread, I will never ask them how they are doing, so that they won’t get used to it and feel bad when I won’t care anymore at the birth of their firsts.