I saw what I think is the beginning of a supercedure cell today. The hive was started from a package and installed on April 17th. They are starting from bare foundation and have drawn out 6 of 8 frames completely. Frame 7 was started and they haven't touched frame 8. This was the only supercedure cell in the hive. I added a second brood box today and took one drawn out frame from the bottom and put it on the second brood box. I saw the queen today, there seems to be lots of brood and I can see larvae. I'm not totally sure how to judge her brood pattern, it isn't is good as my other hive, but not sure that is bad either. What should be my course of action at this point?

I couldn't figure out how to post a picture... but one is located here