I need to change my address on the return I just filed. Is that possible?

You will not be able to amend your tax return until it has been accepted by the IRS.  Please see the below FAQ for more information on amending a 2020 tax return: 

https://ttlc.intuit.com/community/amending/help/how-do-i-amend-my-turbotax-online-return/00/27577

You do not amend a return to change an address ... if the return is accepted for processing later this month then mail in a form 8822 to correct the address ...  https://www.irs.gov/forms-pubs/about-form-8822