As soon as you download the label or QR code, the item is shown as despatched and the tracking is added to the sale.
Easy fix ... don't request the label or code until the day you plan to send.
"There are two ways to be fooled. One is to believe what isn't true; the other is to refuse to believe what is true.”
Søren Kierkegaard, Danish philosopher (1813 - 1855)