Of course via negative feedback loop at HPA
If your "bloods" are normal and you like how you feel, don't change a thing!
And proceed as per Dr Jim!
Good luck
Could you illaborate a bit more about the negativee feedback loop at HPA with Levothyroxine?
I just looked into it a bit, however am unfamiliar with it. Would like to consult with my doc about it at my next appointment with some good info.