Callum is trying to stand on his own. He can hold himself for a couple of seconds before he plops back down on his knees or butt.
Jon left this morning for a week-long business trip to Miami. It's going to be a long week without him, that's for sure. But wouldn't it be crazy cool if he came back and Callum was standing (without holding onto anything) and cruising, all on his own?! :)