I’d try out eating more carbs for a bit or gaining better nutrition. The thyroid/adrenal stuff could be just from pushing yourself too hard and being too active in your life (working too hard and being really busy). Homeopathy works from my experience so I would stick with it. I would ask them about boulardii and whether you should try it and this might help you get the upper hand on the yeast temporarily.
They can’t test whether homeopathics work or not but they don’t really do long term testing they just look at the blood, etc.