your EIP2 eligibility was based on your EIP1 eligibility
your EIP3 eligibility will be based on your EIP1 eligibility if you don't file 2020 tax return.
If your 2020 return makes you ineligible, don't file !
Once the payment is in your hands, by law IRS cannot ask for it back.
Unless the progressives go crazy, the EIP3 will be sent out well before April 15.
