Sam is just 5 months old and he has already fallen into peer pressure!!! ( He started taking a bottle about two weeks ago, only once a day and not without much hesitation) So, I had a talk with him about how his brothers started holding their own bottle at four months and that was it. He had to show them he was not going to be left behind.
He also has started sitting up this week. That is a workout for a 20 pounder, but as you can see he really likes it. I think he just likes being able to check out what is going on around him. He has to be ready in case a random baseball, toy, or sippy cup comes flying passed him.