There are many levels of plateau, and any plateau doesn't mean you stop growing. Plateau is another term for the growth is not as fast as we want, the growth is still there at a very slow rate.
An average growth is 3 micro meters each day, either be girth or length. When it drops to 1 micro meter each day, we have to evaluate what went wrong. Over the course of 6 months, we don't get the more than 0.01cm of growth, we know we hit a hard growth limit, or a hard plateau. This when we truly need to find a different method of approach. The main method is to decon, or deconstruct, or decontaminate. In other word, rest. It can be a 3 months to 6 months of pure rest, allowing the tissues and brain to reset back to the new normal conditions. When we restart, we restart back very slowly to prevent the fast hard plateau limit again.