I accidentally claimed that I obtained disaster relief, now I cannot change it. How can I change it?

I claimed that I received disaster relief in 2018-2020 (thinking that this was the COVID Stimulus). Upon federal review, I found that this was not the case. I am unable to uncheck this box on the return, or go back and find where I made that claim. I have reviewed all 1099-R forms and the casualties and theft areas in income and deductions, as well as scouring all the rest of the process.

 

Please help me fix this so I do not have to go back and start my entire return over. I am at wit's end.

 

Thanks.