I did a double check and this is what I found.
https://www.irs.gov/filing/file-an-amended-return
How to file an amended return
To amend a return, file Form 1040-X, Amended U.S. Individual Income Tax Return. You can use tax software to electronically file your 1040-X online.
Submit all the same forms and schedules as you did when you filed your original Form 1040 even if you don't have adjustments on them.
File Form 8879, IRS e-file Signature Authorization with your 1040-X.
You can file up to 3 amended returns for the same year.
File on paper if you're amending a return:
- You filed on paper for a previous year in the current.
- Example: You filed your original return on paper for tax year 2023 in February 2025 and need to amend the return.
- For tax years 2021 and prior.
