After you file

My situation similar to JamesG1.  I filed jointly but my husband died Jan.9, 2019.   I was told I didn't put in AGI, and I was told where to find it on 2018 tax forms (Line 7).  I did this and refiled as instructed around March 29 0r 30, 2020.    So far, no response from feds.  Need I do something else?