How to correct stimulus mistakes

We filed our joint 2019 Federal Taxes in early February with an adjusted gross income of $150,994.  The return was accepted and our refund was direct deposited into our checking account.  We subsequently received a corrected 1099-Div from E*Trade.  One stock failed to report “return of capital”.  When I filed the amended return, the new Adjusted Gross Income fell to $148,184 (should get the entire $2,400).

 

The amended return has not been processed yet.

 

How will this affect my coronavirus stimulus check and how do I work to get an error corrected?