Last night during supper (around 6:30 PM) we noticed Makoto nodding occasionally.  He was all tuckered-out.
So after eating, I picked him up and walked around the house for twenty minutes until he fell asleep.  It was very 懐かしい (natsukashii nostalgic).  I used to put Makoto to sleep all the time that way when he was an infant.   …Only he is a little heavier now.
Guess it is something I have to look forward too in a few months (with the new baby).