Apparently there is something called the recovery rebate credit in the new stimulus. If I understand correctly, the first two checks were based on your 2018/2019 taxes. If you did not receive the first two checks or the amount was less than the full amount because of your income in those years and you took a big hit to income in 2020, you may be eligible to retroactively get a rebate credit on your 2020 tax return. I'm probably not explaining it right but it might be worth looking into if your income in 2020 was less than the other 2 years.