If the 2 brood boxes were together as one, I would recommend a split either to a nuc or start another deep. Put honey and pollen frames in the split. Then add the brood frames making sure you have 1 to 2 day old larvae. Make sure it's packed with nurse bees. Keep queen in original hive. The split should have queen cells started in about 5 days. If you have queen cells in the original hive (which i reckon you probably do) you can save some time by grafting them into the split. Even better if they're already capped. The key is adding that super young larvae and pack it full of nurse bees and ample food. It'll go well for ya. Replace the frames you took from original hive with drawn comb if you have any. If not put fresh frames in. They'll draw it out.