I’m starting to reconnect with some of my old friends from high school but they have a 5-year-old now and I want to make a good impression but I don’t really know how to interact with children. Do I just like ask them what their favorite Disney movie is or something?
First of all, update that title. It gives a really bad vibe.
As for the question, don’t try to be a “good uncle”, don’t pretend to know stuff the kid does unless you know it. Ask your friend how to approach the kid. I’m almost sure all tips you get from the random people from the internet will be useless or confusing.