Definitely start way lower with ur test dose. U don’t want to overshoot ur sweetspot for E2, dht and prolactin. Starting too high and overshooting the sweetspot with everything is one of the worst mistakes u can make, with any protocol. I would recommend starting with nandrolone at 200, and test around 20mg/ week. 30mg at most.
And I don’t worry about prog, on a nandrolone base, but I do think about it a lot. I just wish we knew, definitively, how progestins reacted with actual prog receptors. Maybe the info is out there, I’ve just never come across it, or have found anyone that definitively knows. Like does it act on the prog receptor similar to bio-identical prog? Does it fill the prog receptors, but not carry out the actions that bio-identical prog does, and also block bio-identical prog from getting into the prog receptors? I want answers to these questions more than u could imagine! lol. What I do know, is some guys feel way better on a nandrolone base, than on a test best, which is why I don’t worry too much about it. Whatever is actually going on, seems to work well for some guys, and I think it’s important to listen to the body. If u feel and function good, in all areas, that’s probably a good sign that things in ur body are working well. Obv there’s exceptions to this. Like if a bodybuilder is on 1000mg of gear, and feels awesome, that doesn’t necessarily mean his body is in a state of optimal health. But in general, I personally don’t worry too much about prog, on a nandrolone base, if everything is going well subjectively and objectively.
And ya, that’s the best part of a nandrolone base. Instead of getting ur androgens up with exogenous test, and then possibly needing to lower E2, dht, and/ or prolactin, while trying to keep androgens the same, it’s the opposite with a nandrolone base. U keep androgens high with the nandrolone, and then u have to raise up ur E2, dht and prolactin, with the test. But it’s awesome, because all ur androgen needs are covered with the nandrolone, so u simply start as low as possible with the test, and titrate it up until u find ur sweetspot. And test is bio-identical, no need to worry about sides from it. Unlike meds that one would need to take to lower E2, dht, and/or prolactin, such as AI’s, 5ar enzyme inhibitors, and meds to lower prolactin, such as cabergoline, pramipexole and bromocriptine.