Re: 2nd Box Added
I'm a bit new also, but I think you are doing great. From what I've read they will start storing, and even laying, in unfinished cells. They will just buildup around it and store more as they fill it out. The moving the frames around is usually just to get them to accept the new box, but it seems they aren't having a problem with that so everything is goo there. I think they will move up to the upper box for laying when they are laying faster than they are hatching. It took mine about a month after I added it for them to lay there.
Inspecting once a week is what I've heard is about the most you should do. Even that is pushing it according to a bunch, but we need to learn somehow. Most people I've talked to say that opening the hive sets it back 4-7 days. But your seem to be doing great no matter what, so who cares. It took my girls, also from a nuc, three month to fill out 2 boxes so your are really going good.
Keep it up.
Disclaimer: I know enough to know I don't know anything yet.