Deductions & credits
You answered a question wrong. You needed to select they lived with you THE WHOLE YEAR when entering a newborn. You can amend your return.
How to amend a 2020 return
https://ttlc.intuit.com/community/amending/help/how-do-i-amend-my-return/00/27439
Heres a screen shot. It's from 2017 but it is the same each year
