Camden's "Little" Buddy

Remember little Alex Franson? Well, he's all grown up. Born about 3 weeks after Camden, he seems like he's double in size. The kid is just solid. As a result, Alex has been a little reluctant to become as mobile as Camden. Each time we get the two of them together, Alex sits stationary while Camden crawls around Alex and climbs on him. Alex just sits there with a look on his face like, "What the hell are you doing? Don't know these big people will bring you stuff? You don't have to chase after it."