Keep up the practicing with the doll stroller.
I'm glad you like your new baby doll. You can help him find his pacifier
You can practice telling the baby funny stories
And make sure the baby knows who Mommy and Daddy are
I'm glad you like your baby doll, though we might need to practice being a bit more gentle when you want to drop the baby in order to play with something else.
It's good that you like it because shortly after your birthday, you are going to be a big brother.
Exciting news, huh. :)