By way of introduction, I try to be treatment free with very limited success over period of 10 years. I do have to purchase new nucs frequently to start the season.This year despite sub zero temps, I have one hive in particular that has not only survived but is booming. I have one deep, a queen excluder and and one shallow(super) along with a top entrance above the excluder. My question is very basic for experienced beekeepers. How do I preserve the queens genetics in this hive. Is it too early to split, and if not what is the best method of splitting. I do not see queen or replacement or swarm cells. If I split and add a new queen to one part of the split won't I be replacing the genetics of the existing queen?