good to see people are still making and enjoying this one! I do it about every fourth brew now and I still love it each time.
Fodder: I usually rehydrate my yeast by getting a sterile glass, putting some 20deg water in with a teaspoon of white sugar, pitch yeast in. I do this while i'm boiling, then pitch the yeast around 6 hours later or so, when my brew is at 20deg or whatever my target is. The notto is usually flocculating hard by then. After adding the brew it usually takes a full 12 hours to start bubbling, it multiplies a lot before bubbling and activity starts. relax and have a beer, you can always pitch yeast much later, after all what you have right now is basically a no-chill container with a brew ready to go. No rush to start, assuming it was all nice and sterile to start with!