One Kid at a Time is the twelfth episode of Season 4. It aired on January 16, 2013.
When it comes to having more than one child, there is a chance that they will fight for their parents' attention. When Frankie and Mike decide to dedicate a separate day to each of their children, Axl takes them to a paintball range, Sue has them do several separate activities, and Brick wants to go to a sci-fi convention, but doesn't get to go. In the end, Mike and Frankie learn something about Axl, Sue learns something about Frankie, and Frankie learns that she's been buying shoes for Brick three sizes too small.