After you file

@bbag 

If you got merely your original refund, and IRS has not done any adjustment for you yet, you should choose to wait to see if IRS sends more over the summer.

An amended return will take even longer than waiting to see what happens

It is still possible that you are due more than IRS calculates, if you become eligible for certain credits.

For those you must amend.

 

NOTE: you only get one 1040-X e-File in 2020.