Re: Did I just kill my Bees?
In 5 days have a look in the original hive. If there are eggs in the brood comb that is where your laying queen is. A lot of bees would have drifted back from the split also meaning that hive could still be in imminent risk of swarming.
To counter that, as the other hive has bees to handle it you could transfer combs of brood from this hive to the other, just one every few days as the other hive has bees to cover it.
If the queen ended up in the new split just leave both alone they will be fairly balanced for a time.
But if you don't want swarming, TBH's are not the best choice, they are not expandable meaning the only way to control swarming is split, split, split, and how many hives do you really want, the season is still young.
You could sell them of course, best of both worlds & a hobby that pays for itself.
44 years, been commercial, outfits up to 4000 hives, now 120 hives and 200 nucs as a hobby, selling bees. T (mostly).