After you file

You do not include 1045 or its schedule A (where the NOL is calculated) in the tax return for the year the net operating loss occurred. so there is no need to amend your 2021 return. you do your own calculation using schedule A (be careful. read the schedule A instructions carefully so you know what's business income and what's not and what to enter on other lines). in 2022 when doing your return there should be a question about prior year NOL. no form or schedule is needed to support this amount. if the IRS wants the details they'll notify you. 

https://www.irs.gov/pub/irs-pdf/i1045.pdf