latest day to return the trade in iphone

I ordered an iPhone 14 Pro, which will deliver on Oct. 4. I received the return box today, Sep. 28, for shipping the trade in old iPhone back to Apple. The problem is I will travel out of town from Sep. 30 to Oct. 13. I only can get my new iPhone after Oct. 13. when I back home. Can I ship the old iPhone back to Apple a little later than Oct. 13? Thank you!