No the one coming is a brand new one. It's the 3rd one. You couldn't have entered it on your return yet. You only enter the first and second Stimulus payments. Did you get the first 2? The first one started coming out last April and the second one late December and January.
If you claimed the Recovery rebate credit on line 30 but already got it the IRS will subtract it from your refund. Why do you think you are getting audited? It's probably too early to get audited for 2020. Did you get a letter?
