I think I'm not making myself clear. I'd like to know if fixing RT3 with for example iron, cortisol, b12, and with HC to adrenal fatigue. The body T3 when is high will make some benefit to HPTA. Because I see many doing this and with this things their LH, FSH, Testosterone increased. So I'd like to know when TSH decrease, RT3 is clear, then T3 goes to the cells, this process can make more LH and FSH but I'd like to know if that can make more ACTH too. Because I have adrenal fatigue and sometimes I have low ACTH and sometimes a little bit higher in brazilian units I will also do another cortisol saliva test tomorrow. But I'd like to know how to wean off of HC without returning the symptons.
To resume I'd like to know if ACTH can increase if the person has enough T3 in his system, like it happens with LH and FSH.
Stopping HC suddenly can be dangerous, always taper off so your body has time to try to pick up the load.
As for the other question(s): I think that you are reading too much into this. Make the changes that you want and see how you feel and where the labs go. There is so much individual variation in these things that you can't get very far with theoretical issues.
Do what you can that might improve your adrenal recovery. Again, all of the major hormone systems affect each other. So you need to do what you can for these systems.