Overall, we could not be happier about Jackson's reaction to his  little brother. He still loves to help out when it comes to baby stuff  and truly enjoys discussing Eli's ...uh... digestive productions.    Mama, is it a poopy diaper?  Yes, it is.  Well then, I better check it out.  Really?  Yep, let me see ... EWWWWWWW! You're right, that's a poopy one.  Thank you, Jackson.    When Eli is on my shoulder, Jackson loves to inform me if Eli is asleep or awake.  Sometimes our conversations are endless:    What's the status, Jack?  Asleep.  Asleep?  He's awake.  Awake?  Nope, asleep. Wait! He's asleep.    He is the most helpful when it comes to tummy time. He sings and  dances, putting on such a show that Eli can't help but hold his head  high to catch a glimpse of the whirling dervish.  Of course, there are pangs of jealousy. They bubble up in  unexpected moments. Like at the end of Eli's PT, when Jackson will  suddenly have to show us his own tummy tim...