the bad news i have for you is that homeostasis and genetics are the prime factors you are fighting here. it is much easier for someone who was lean and got fat, to lean up again vs. someone like you who has never been super lean to get lean.
just eating in a calorie deficit DOES NOT WORK. you have to radically change the way you eat, including meal timing.
Have you tried either the peptide GHRP-2 or the peptide GHRP-6, claritacheese? For whatever it may be worth to you, GHRP-6 causes my appetite to go dog wild while using tren'.
I have helped a lot of people in your situation. I would reach out and hire a coach to help you.
Getting lean is easy. Getting shredded is not. You need to be very smart with your diet and training protocol. Carb cycling is the best way to go about it. The high carb days prevent metabolism slow down and muscle loss.
12% body fat really isn't that low and you don't even need any "cutting drugs" to achieve that so I'd be very curious to hear what you've been doing in the past.
Did you run tren only?
it makes no difference what you run etc.. your diet dictates all of this... you can easily get to 12% with NOTHING but diet and cardio discipline and consistency