Thank you for standing up with and for the real XX women of the world.However, there are two points that I feel you should be aware of and consider
Requiring someone like Caster Semenya, who is XY, to reduce her testosterone so she can compete in the protected women's category isn't an inhumane burden. She can politely decline to do so and compete on an amateur level like most athletes across the globe or she could try to compete professionally in the men's category (which maybe should be redefined as the "open" category).
First, you keep referring to the XY male Semenya as she and her, instead of he and him. I understand you've likely been pressured by the lobby of men who want to compete in women's events, but strongly request that you stand firm. not give in to them, and do keep firming standing with true XX women.
Secondly, slightly reducing his testosterone, to levels still far higher than that of an XX woman, is NOT a solution. Either make the requirement to be as low as the typical level for real XX women, in which case he would no longer be competitive, or the best solution, stand up for all XX women, by not allowing any XY man to compete in the women's events, even if they slightly reduce their testosterone.
To do otherwise is to take a desecrating position toward women, and the women's athletic events.