You are correct, they do not advocate DAP anymore due to some health guideline, but the use of Fermaid K and O in place of DAP.
There are a few ways to work with adding the nutrients and calculators to help, either by sugar break based on thirds of gravity, or staggered by day.
Degassing from what I am reading and understanding is a MUST as the CO2 levels get toxic for the yeast, and for the first few days inducing O2 is encouraged. Using an airlock without any liquid is the preferred method. A lot of this is a bit counter to my brewing understanding, but then honey water is different from wort....and as it is all simple sugar will ferment out 100% unless the ABV stalls the yeast.
the protocol I am using was developed by a microbiologist in the cancer research field, to make a VERY drinkable mead in 1 month Bray's One Month Mead (BOMM) and relies on the fermenting power and profile of Wyeast 1388....any other yeast while making a decent mead, does not end with a VERY drinkable mead in that time frame.
The whole 47 pages can be found on HBT in the mead forum