Queen help

Hello I've split the hive in three small hives since I've noticed new queen cells emerge and I've considered that I'll avoid swarming like this but I was wrong. The mother hive I've took the two cells started forging new cells and I'm concerned about losing half or more of the bees from that hive. Note that the two hives queens emerged and they're perfectly fine,What should I do? It's my first ever time doing these and I don't know what to do