Leo that's who!
Leo has never babbled before today. He's nonverbal and has only made singsong sounds, moaning, laughing or crying to vocalize. I was in my office on the computer and all of a sudden I hear this sweet little baby voice softly saying Ba Ba Ba over and over. Thankfully, I had my phone handy and caught it on video. Less than 2 weeks ago, he waved bye bye for the first time and today he's babbling. This is a big step!
Let the floodgates open...
(someday I will remember to hold my phone sideways to get a full screen video)