I have not received my SC nor does "get my payment" say that I will. If I claim RRC on taxes my 2020 return has one less dependent. I lose $600. Can this be fixed?

I will not get as much had I gotten the original stimulus check. Feeling cheated here. Someone answer this. I have read that the RRC is calculated by your 2020 taxes and TT program does that. I have found nothing online about how people will be shortchanged. I can't be the only one.