Thanks for the links guys, there's A TON of info there.
A few things stood out to me. For starters, the article mentioned that calorie restricted diets increase reverse T3. For about two years, my caloric intake has dropped significantly. Not intentionally, stopped powerlifting and got way more involved with work. I'd say there's been a roughly 50% drop in calories from early 2016 to now. Even larger for a few months late 2017. Right now, I eat at maintain calories for my current weight. (not sure if its important, but I definitely do not have a slow metabolism)
The second thing, and I touched base on it in my reply to MarkM, is how the article 1Draw linked suggests lowering reverse T3. The article mentions using SHBG as a tool to measure whether thyroid medication is working or not. If you take the medication and SHBG levels increase while estradiol levels remain constants, the medication is working. In the article for lowering reverse T3, the first suggestion is to take T3 medication. Would this not just increase SHBG and cause issues with bioavailable testosterone levels. Fixing one thing, but breaking something else.