Love.

As I've mentioned multiple times, Henry loves his little sister.

Books must be angled so that she can also see the pictures.

He asks where is "Lila" as soon as he wakes up from his nap.

She must pretend to eat his food at all meals.

Just acknowledging that she sees his toys is not enough. She must grasp the toy with her own hands -- a tough feat when you are only 2 weeks old.

And, if the house is ice cold because I was having crazy postpartum heat flashes and the new baby needs a hat, Henry also MUST have a pink hat on his head as well.

See?

He loves his little sister.