After you file

I've noticed many folks who received their federal tax refund on March 17th didn't get their stimulus payment on that day but the IRS stimulus shows all of us eligible with no deposit.  It's very frustrating because I filed my 2020 taxes later so I'm eligible for the stimulus payment based on my 2019 taxes.   2020 I wouldn't be eligible, we took out money from retirement funds to pay for repairs.  Does that mean even though it shows I'm eligible for the stimulus that it can change since I haven't received a deposit date yet and instead they use me 2020 return or once it shows "eligible", i'm good?