After you file

They should have been added on your 2020 return.  Check line 30.  If line 30 is blank you can amend to add them.   Do not amend until the IRS finishes processing your first return and you get the original refund.

 

How to amend a 2020 return
https://ttlc.intuit.com/community/amending/help/how-do-i-amend-my-return/01/27439