I'm not familiar with the dosing for Servomyces, but I generally follow the following staggered nutrient regimen:
8g DAP (diammonium phosphate)
4g Fermaid K
Mix the above and split into 4 equal portions. Add the first portion when pitching yeast. Add the remaining portions at days 2, 4, and 6 after aerating the must.
I don't think Servomyces contains much nitrogen, so I'd consider adding some DAP along with the Servomyces. Meads contain a lot less nutrient than beer, so I'd maybe use double the recommended dose for beer of the Servomyces.