Delay MacBook Pro trade-in until Mac mini M4 delivery?

You are granted 14 days to get your trade-in into their hands after you receive your new Mac.

Apple Trade In - Apple

❝Timing and Process

• How long does the online trade-in process take?

• How quickly should I return my device?

Your trade-in estimate is valid for 14 days after you receive your new device. It’s important that we receive your trade-in within this time frame to ensure that you get the estimated value. ❞

Hi,

I suppose you haven't received Trade-In package from Apple. You should send out Trade-In package after you receive Mac mini M4 from Apple online store.