the short answer
Train an assistant coach to a documented standard, not to your instincts. Write down how you read check-ins, decide changes, program and refer out; have them shadow you applying that to real clients; then let them draft while you edit every reply until the gap closes. Move to supervised solo with weekly spot-checks, then full autonomy with a periodic audit. Train the judgment, not the software - and never release a coach whose drafts still need correcting, because the client feels the drop before you do.