A lot of skills plateau for a while before the next jump. The flat part is where people quit and miss what was coming.

Improvement is not a smooth line, and the flat stretches are part of the shape rather than evidence of a problem. During one you are usually consolidating something that has not surfaced yet, which feels identical to going nowhere. That resemblance is what thins the field, because people leave while the work is still in progress.

If you are on a flat stretch, hold the routine for four more weeks before you judge it. Keep the sessions the same and stop checking for progress daily. Decide now which date you will reassess, so one bad Tuesday does not decide for you.