I have already submitted my taxes. I included the 600 stimulus payment bc I haven't received it checked the status again and it said it has been mailed.What should I do?

I have already filed my taxes, I included the second $600 economic impact payment in my taxes because I haven't received it. I re checked the irs website and it updated and said now that it has been mailed. What should I do? Send it back to the irs or can I adjust my taxes after they have been submitted?