I am in a similar situation, but not holding my breath either because it's been more than a day for me (and it sounds like even a lot longer for you) and in majority of the cases that I have read on this forum before, VIN assignment happened in a matter of hours (and not days) after EDD was reset back to default/vague one.
Who knows though, a major delivery delay at this point might not be a bad thing if HW4 is coming soon (although highly unlikely within the next month or two, despite what others are saying about upcoming Mar 1 announcement), and/or if all Model Ys still qualify for full tax credit even after March (this one I think is a good possibility because of how battery sourcing manufacturing rules in IRA apply).
Besides, Model Y now qualifies for CA rebate again~! So, you and I will get $2000 CA rebate on top of fed tax rebate. Just trying to stay positive here....