I have just e-filed my Maine state return, and I forgot to include extra documentation required for the Student Loan Repayment Tax Credit (SLRTC) for Maine. How do I fix?

This is my first year filing for the Student Loan Repayment Tax Credit (SLRTC) for Maine, and I just found out more documentation (copy of transcript, proof of loans) is required according to the Maine website: https://www.maine.gov/revenue/faq/student-loan-repayment-tax-credit#q12

I wasn't notified by TurboTax about extra documentation, so I mistakenly didn't think to look. How do I correct my state return and upload these documents?

Thanks.