If you have filed early before the exclusion, the IRS will recalculate your return for the new 10,200 unemployment exemption for you. There is no need for taxpayers to file an amended return unless the calculations make the taxpayer newly eligible for additional federal credits and deductions not already included on the original tax return.
Just keep waiting. The IRS is sending them out in batches over the summer.
See IRS article May 14, 2021
Do you need to amend your state return?
There is nothing you need to do for the unemployment compensation exclusion. The IRS is calculating tax refunds for those who are eligible for the exclusion. The IRS has started to issued tax refunds for the exclusion starting in May and will continue throughout the summer months.
Go to these IRS websites for information -
@111284 For a CA return? CA did not ever tax your unemployment to begin with.