appears everyone will receive Form 1444 which will state how much you received (I suspect TT will ask you for this amount) and then TT will determine if you are eligible for more; you are not required to return stimulus if the 2020 calculation determines you got 'too much' - that is the way the CARES ACT was passed.
See the instructions for Line 30 of Form 1040 on page 56 of the link below
https://www.irs.gov/pub/irs-dft/i1040gi--dft.pdf
