Do Mornupiravir needs to start taking internal medicine on the day of the day if it becomes positive?

Mornupiravir stated in the description of the drug, "initiate administering promptly after symptoms of SARS-CoV-2 infection appear. In clinical trials, no data was obtained to support the efficacy of patients who started administration on or after the sixth day of symptoms."
Therefore, it is not necessarily necessary to start taking it on the day of the positive, but it is supposed to start administration as soon as symptoms develop. Please consult with your doctor as soon as possible about when to take it.