Feels like I'm getting scammed by AME

I understand I have a complex medical history. Type 2 diabetes, sleep apnea, depression and ADHD. So it's a lot of work to get my medical. That being said, I've provided everything asked of me, prescription history, nature if diagnoses (ADHD was never really diagnosed, just talked about at one point) and even went through the HIMS psychologist (psychiatrist? I forget which is which) to the sum of $3,000 and the last year of my life gathering this data. The point of the meeting was to rule out ADHD (prove i don't have it) as well as show my depression is in remission ( I weaned off the antidepressants but we were trying to be thorough).

Finally submit my file to FAA, 3 months later I get a letter asking for more info. Confused I contact my AME to ask what else we can provide at this point since he has ever relevant record? He has moved onto a new position out of state and turned my notes and his practice to a new AME who wants me to see another HIMS doctor to "question me for the FAA and organize my medical history for submission" for another 3k as well as come see her in person at $200 and hour for an exam?

She may have my best interest in mind and I'm just frustrated, but it feels like I've already done this dance. Maybe someone else has been in a similar situation or maybe I'm just venting. The cherry on top is the new AME is saying it should take another 18-24 months to get this taken care of...on top of the year I've spent doing this already? What the actual fuck for?

Thanks for reading.

Tl;dr I'm annoyed at all the shit my new AME says I should do and suspect it's more of a cash grab.