Honestly, you would probably have to submit all purchases to another sheet using a form button (including any additional info). Then the user would have to view that list and click on a buy button for that list. That starts to get quite a bit more complicated. If you establish an order ID, then you can submit the order ID as part of the stripe purchase and then cross reference from the app:sales to the order (form response) sheet. Or you just include all of the info you need in the Product Name field and just use the app:sales sheet without the need to cross reference.
This falls in line with having to create your own cart. I haven’t personally done it, but there are several other people in the forum that have worked through all of this. You could start here and work through all of the other links and comments to get some ideas.