Well, if I had my feet chopped off, I'd sure have to come to terms with having no feet. Your body is not the standard, hormonally speaking. You simply cannot expect to attain the same results as a "normal" body by using normal measures. That doesn't mean you should give up, but finding some serenity should help you on a daily basis.
Lost all pituitary function
It sounds like you've tried some hormonal manipulation already. I'd keep going down that route. There's got to be a few other things you can try. In the meantime, don't get hard on yourself, just stick with what's working and continue seeking improvement when and where you can. Play the cards you've been handed, but play them well.
Steak, eggs, potatoes - fruits, nuts, berries and forage. Coconut milk and potent herbs and spices. Tea instead of coffee now and teeny amounts of kelp daily. Let's see how this does! Not really had dairy much, and gut seems better for it.