Payment Form Subscription Option

Question:
Is there code, or a work around to add a subscription to the payment form?

Product:
Wix Editor

What are you trying to achieve:
With the recent changes allowing products to be added to forms and checkout our business has been booming. We have a form for users to purchase a service to file EPA required permits for Stormwater. The form is functioning fantastically.
We would like to add in the option for the user to add in an option to add a subscription for regular inspections on their site. The form doesn’t allow for reoccurring charges, and the checkout form for the subscription service doesn’t offer the functionality the new payment forms have that are needed. - The option to save the users credit card information doesn’t seem to work on payment forms, so manually enrolling them is out of the question.
The end goal is to make it so the user doesn’t have to checkout and pay twice, that it can all be encapsulated in a single payment.

What have you already tried:
Wix chat and phone help have been less than helpful. The closest thing I’ve gotten is to create a modal that allows the checkout in a pop-up window without closing the form page. Using a lightbox navigates the user away from the form page, and then they would have to start the form over. Either way the user still ends up having to checkout twice.

Additional information:
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