(trying to give a non-judgmental answer )
I had some tax issues in the past and put that down on the forms. During the subject interview the investigator had me sign some releases that allowed them to obtain tax records. Without one of those releases, I’m not sure what kind of records they can get. I actually had to get some records myself and provide them to the adjudicator.
At least you are addressing the issue now. As others have noted you have some problems because you were not honest when filling out the forms. Aside from the public trust issue there may also be “suitability” concerns raised by your failure to answer the tax question accurately.
Maybe you will be OK, stranger things have happened. But you should probably start working on your plan B at this point.