Updating paper return before mailing

[Libbylees1023]

I need to update my return to include the routing number for my very new bank account. I was not eligible to file electronically due to some of the IRS’s requirements and regulations. I still need to print it, sign it, and mail it. How do I update or better yet where do I update to include my new bank & routing info?
*** I REPEAT, I AM STILL IN POSSESSION OF MY RETURN! IT HAS NOT ALREADY BEEN FILED****
Thank you. 

[MinhT1]

Please read this TurboTax Help topic.