When do we begin working with the mind?

We already are.

Still uses the breath as a doorway into the mind. In the world we live in, trying to work directly with the mind can be difficult. The mind is subtle, but the breath is always available.

In the Centre phase, we focus almost entirely on the breath and the nervous system. As the breath becomes steadier, the mind naturally becomes more available for deeper work.

From the next phase onward, we begin more deliberate training of attention and concentration. Right now, you are building the foundation. This foundation matters.