The 2019 amendment program is available now and is easy to download ... the add the 1095-A to populate the 8962 then print it out and send with the 1095-A to the IRS as directed in the notice you got.
https://ttlc.intuit.com/community/tax-topics/help/how-do-i-amend-a-2019-return-in-turbotax/00/123845...
