This will likely take a day or 2 to start up anyway....let's give it more than 8 hours before you declare your yeast dead.
If nothing is happening on Sunday.....Re-pitch and re-aerate...but relax until then.
If i understand properly...you're making a show mead...or just honey and water? IMO, Campdon is a waste of time, as these types of mead really do not need it.
Seriously. I'm here for BEER
It's Not The Size Of Your Rig That Counts....It's How Often You Use It.