How can I track upsells from a custom button on product pages?

Hey gang, in addition to the regular add to cart button, I have an upsell section on my product pages that adds multiple products to the cart and one click with a custom button.

is there anyway that I could track which purchases were made with this button versus the regular add to cart button? Either via order notes or custom order properties or something… cannot be utm because that would conflict with the conversion metrics of our paid ads.

would appreciate the help :blush: