Sure it is reversible. Absolutely.
And it isn't all soy. Soy that has been fermented (tempe and tofu) shoud be okay, although I don't trust modern food companies.
Just eat right and exercise well. There are loads of books on this topic.
Here is a simple and clear one to downoad.
How To Naturally Increase Testosterone by Tucker Max
https://en.id1lib.org/book/3316081/e39244
Here is another.
Master Your T: The Definitive Guide To Raising Your Testosterone Naturally
Sure it is reversible. Absolutely.
And it isn't all soy. Soy that has been fermented (tempe and tofu) shoud be okay, although I don't trust modern food companies.
Just eat right and exercise well. There are loads of books on this topic.
Here is a simple and clear one to downoad.
How To Naturally Increase Testosterone by Tucker Max