I have 50 years on my little guy so you know it’s fun. :-)
Enjoy him. Their childhood goes so fast it will make your head spin! My baby is 15 now going off with her friends and their parents to Lake Tahoe for a ski trip next month. I’m worrying about her staying warm like she’s still three. It’s enough to make a grown man or woman cry!
P.S. Be sure to buy him one of those electric jeeps when he’s four or so. You’ll never smile like that in your life and neither will he!