I don't think do. You need to amend a 2019 return with the 2019 program. The 2020 amended return won't be ready until March 25. Maybe when it is you can also efile an Amended 2019 return too.
How to amend 2019 Desktop return
https://ttlc.intuit.com/community/tax-topics/help/how-do-i-amend-my-2019-return-in-the-turbotax-cd-d...
