The IRS announced that it would stop processing stimulus payments on January 15. But it continued to process them until February 5. So there are many people in the same situation as you are in. The IRS has not yet let us know how they intend to handle this.
They will open to accept 2020 returns on February 12. We expect to hear from them if anything will need to be done and how they will handle this situation.
I do not believe that you will have to refile or do anything to correct the issue.
