Symptoms especially thinning facial hair do not happen in 30 days. High fat and protein diets do not lower testosterone. Assuming your calorie count is not extremely low
Your test results do not show ranges. Could you print everything you have? You heard right about SHBG. 608ng/dL is not that high depending on your age. For a lot of people that is enough. But not for everyone. Your eyebrows hint at a possible thyroid issue. KSman would be asking you if you use Iodized salt. A lot of people have damaged their thyroid due to a lack of iodine. The symptoms are similar to low T. Treating lowT while you have a thyroid problem doesn’t help a bit.
You need to read all of this, then get back to this entry with all the information asked for. It will answer a lot of your questions. So you then can ask even better ones