Sure Shot Scott

[normal lynx]

If it's for the first payment, then you would need to essentially pause payment for the first invoice by setting payment_behavior to default_incomplete on the Subscription when it is created (see here: https://stripe.com/docs/api/subscriptions/create#create_subscription-payment_behavior). This will create Subscriptions with status=incomplete when the first invoice requires payment, so that you can update the Invoice.

Once the Invoice is updated, you would need to then need to confirm the Payment Intent on that same Invoice, which will process the payment and set status=active on the Subscription