Baby D is now 4 months old. Unlike his first few months of expressionless face, he can now smile and laugh. If you call him, he will turn to look at you. And if you talk to him, he will give you this smile and turn away in a shy manner.
How do I get things done with 3 kids at home? Well, sometimes I would put Baby D down on a mattress in the living room and ask the other two kiddos to entertain him (see, having more than 1 child is actually beneficial). I notice he has been watching his two siblings rather intently lately. Probably picking up on all the crazy stuff they are doing. Oh no!
He can also play with the baby gym now. Focusing and trying to grab the hanging stuff to put in his mouth.
When he is tired of playing on the mattress, I would plunk him down in the stroller and have him sit and watch me do stuff. Most of the time, instead of watching me do stuff, I put him near the door facing outside. He seems to like this better.
Look at how he sits on the stroller -- with one leg up like a 'tai koh'. So people, meet my boss #3.