Yeah, really: where on earth did anyone ever get the idea that after Confirmation, they're "done"? One of the most insidious practices I've seen is ANY treatment of the Sacraments as "achievements," bureaucratic hoops, or some sort of "Catholic graduation." It's insidious for its subtlety. We go broader and deeper in the Divine-- and Sacramental-- Life as we enter into the Sacred Mysteries. But it's not something that we can somehow "graduate from." That idea is nonsense.