Prepare and adjust recurring invoices in advance before collection

As a coach, I want to be able to review and adjust a recurring invoice as a draft before the collection date, for example, seven days in advance. This allows me to add extra costs or a one-off discount before the invoice is finalized and collected. The preparation process must follow the actual payment cycle, even for four-week subscriptions. Additionally, I want to be able to issue a final invoice earlier if necessary, for example for reimbursement by an employer, while maintaining the agreed collection date.