He's done a massive blog post on itWill have a good read.
The first two weeks on keto you need to drink three times your usual amount of water (everyday without fail) with added electrolytes or just plain salt if you can stomach it.
This is the reason why journos and dietitians post their silly anti keto/low carb rants on why they give up after 4 days because they feel like s**t.
https://www.shawn-baker.com/the-meat-blog/2018/4/20/testosterone-its-complicated
Haven't had a chance to read it yet but the latest consensus seems to be that the carnivorous diet increases androgen receptor sensitivity so there is no need for high levels of test