So I prepared my must and put it into the primary fermenter, and I also prepared the yeast by adding 2 cups of hot water to 2 tbs of sugar, and then let it come to room temp and added the yeast. I covered it with saran wrap and put it in the refrigerator for 2 days. I wanted to use it after 1 day, but I needed to add another campden tablet to the must, so I let it sit for a second day to let the tablet sterilize the must. At this point, I'm not sure how to tell if the yeast is working or if I need to start over. Any thoughts? I guess I'm just wondering if activating the yeast and letting it sit in the fridge for 2 days was a mistake or not.