What you are seeing is flow — the state where your child feels their best and is fully engaged. Your tween is deep in a passion project and the required work is waiting. At this age, a genuine passion project is one of the most valuable things in a young person life. It is where identity is being formed, competence is being built, and intrinsic motivation is alive. Your role is shifting from manager to consultant. The goal is not to get them to stop right now. It is to help them develop their own system for honoring both their passion and their responsibilities. This conversation, done well, builds something that lasts.
I can see you are deep in this and I am not going to pull you out abruptly. What is a realistic stopping point and how are you going to make sure the work gets done?