Am I crazy?

MrsAB1316

So we started CDing our LO a few days ago. He is almost 7 months old. I ordered HD2s, square tabs and Heavy wetter overnights from the Kawaii sale. The HD2s, I don't have to snap down. The square tabs get snapped down to the middle size. The overnights get snapped all the way down. Is it normal to have such a variation in size between those dipes? Or am I crazy?