Hockey,
In my experience with hormones ( My wife and I are both are on HRT), I suggest you call around to endocrinologists asking for information about hormone therapy for victims of head injury. Look for a doctor who has an expertise in head injuries and a passion for those with this problem.
There are also doctors who specialize in "human potential" and "life extension." They may have the experience to help you.
A source to check is
https://www.womensinternational.com/..._referral.html