Without knowing your putative diagnosis it is impossible to answer the procedural issues because the procedural issues vary with the diagnosis. Different diagnoses require different protocols:
https://www.faa.gov/about/office_org...m47/amd/table/
Example:
Decision Considerations - Aerospace Medical Dispositions
Item 47. Psychiatric Conditions - Psychosis
Psychotic Disorders are characterized by a loss of reality testing in the form of delusions, hallucinations, or disorganized thoughts. They may be chronic, intermittent, or occur in a single episode. They may also occur as accompanying symptoms in other psychiatric conditions including but not limited to bipolar disorder (e.g. bipolar disorder with psychotic features), major depression (e.g. major depression with psychotic features), borderline personality disorder, etc.
All applicants with such a diagnosis must be denied or deferred.
....
But even in the case of a diagnosis that is OBVIOUSLY DISQUALIFYING, it still might be waived if it can be established that the diagnosis was not well founded to begin with (like many childhood ADD diagnoses) or that current testing is inconsistent with that diagnosis.
But this is not something the FAA is going to do FOR you. An individual AME MIGHT do it, although the vast majority of senior AMEs are old military flight surgeons or other docs who are themselves pilots who probably just about break even on an uncomplicated physical exam.
For complicated issues, it’s often best to go to the relatively few places that specialize in getting SIs for pilots - guys who work the FAA SI system often enough to be knowledgeable and proficient in doing so. And yes, that’s gonna cost some coin. Shop rates on automotive repair are $100 an hour in my town, lawyers are about $350 an hour, and the doctors doing this have a lot more investment getting qualified for their jobs than auto mechanics or lawyers do.
As for procedural/process issues, do you expect your lawyer to use the same procedure/process writing up your will as he/she does defending you in civil (or criminal) court? Or your mechanic to follow the same procedure/process aligning you cars front end and fixing the transmission? All these things are highly circumstance specific, as are psychiatric diagnoses.
So let me guess...OCD?
