Just my opinion, but I'd use the same amounts or just a slight bit more. I believe it is mostly DAP.
I currently use Fermaid K, and DAP, but I made mead for a long time using "yeast nutrient" and "yeast energizer". I don't know when they started selling Fermaid K, but I didn't hear about them till 3-4 years ago. Most LHBS in my area still sell nutrient and energizer, but don't carry Fermaid K. Why? I don't know. Sorry if I'm overly verbose with this response.