Need help with target and fitting for gains

Sorry to hear that, I assume you are having tests.
In the meantime why don’t you try the approach i mentioned previously.
Either skip fbre test or blutack your mics.
Use the domes that fit well, probably tulips for grip.
Use audiogram direct and exaggerate the results eg if you hear a tone at 30db then mark it as 40db.
See what the results do to the curves/gain tables.
Use specific sounds from the media player to compare eg double bass,flute,bird song and speech components.
Try different prescriptions including pediatric.
Report back.
Good luck.