Just sit tight. Per the IRS:
COVID-19 Mail Processing Delays
It’s taking us longer to process mailed documents:
- Paper tax returns, and
- All tax return related correspondence.
- Expect extended delays if you mailed your return or responded to an IRS Notice.
Also see:
Tax refund delays could continue as backlog of tax returns is growing, tax advocate says - CBS News
Why Your IRS Refund Is Late This Year – Forbes Advisor
