That's good; it's a difficult row to hoe on your own, and really needs support in navigating the process.

It would be inaccurate to suggest an average turn-around time, because of several factors: the response is dependent on each individual applicant and that applicant's personal medical condition, medical records, history, etc, and the turn time on each condition will vary. Moreover, caseload will vary.

Bird in the hand vs. the bush-dwelling variety being what they are, it may be well to occupy yourself based on the longer haul than the shorter one. I had some time to kill some years ago during a brief medical interlude, and chose to turn wrenches during that time. When I was cleared up, I returned to service. The timing was frustrating, as it began the night before I was to start my captain upgrade line training, and having just come from the sim, was springloaded and ready to go.

Adding to the frustration is sometimes that the FAA will ask for more data, more testing, etc, months or more later. Just when one was hoping to return to work, the process seems to be starting again. This may be due to various reasons, and could be as simple as they'd just gotten to one's case, or it could be that an evaluation of the condition was inconclusive and more data was needed. It maybe that additional details came to light to complicate something which once seemed straight-forward. An example is a frustrated poster who has a couple of threads running right now; he held a third class medical, which was revoked when additional complications were brought to light. Further applications were denied; it wasn't necessarily one condition or the other but the combination of information received indicated further review warranted. There's nothing fair about one's medical qualification: just life. I do understand the frustration. You're quite right to get aviation support in your corner.

A popular choice, mentioned here often and utilized by ALPA, et al, is AMAS (aviation medical advisory service): https://www.aviationmedicine.com