federal amendment 2021

I have submitted my 2021 tax return and it is accepted. I have claimed $1400 ecomomic impact payment in my return. I have a refund due but did not get it from IRS yet. Now I realized that $1400 already deposited in my bank account on May 2021. What should I do now. Should I amended my tax return now or wait for IRS response? OR IRS might do a refund with out $1400 (since already paid).