Can I exchange/trade-in my iPhone air after the 14 day return/exhcange period?

Hello,

I had purchased an iphone 17 and got it on launch day via preorder, and have since set it up and began using it for the last few weeks.

but now after seeing the iPhone air in stores I feel as though it might actually be a better fit for me screen size and weight wise. I don’t really use the second camera on the back of the 17 at all really.

Is it possible to trade-in or still return/exchange in store if I have proof of purchase? Or am I stuck with what I have for now?