Amending state return due to unemployment exclusion

I filed my son's returns a few weeks ago, before they announced the Federal unemployment pay exclusion, which affects him. I know that the IRS is telling people not to file an amended return and that they will automatically process refunds where called fo. However, his adjusted AGI has a direct effect on our state taxes, and the state can't do anything automatically since they just start with the AGI and don't know the details. So I guess I'll have to file an amended state return to get his money back, although I'll probably wait a while until after the regular filing season is over since they probably haven't even processed the original return that we sent in.

 

Any comments? There must be more than a few in the same boat.