Re: It's Feb 1 and the bees are making wax already.
I'll split probably in April when the flow is really good and bee population is gaining fast. (or when I see queen cells if before then)
I keep an eye on my top box and when it is running out of room, then I check the bottom box for possible reversal. If empty, then I reverse them. March is probably about right.
Mine aren't making wax yet, but I'm quite a bit colder than you. And we had rain Saturday, so no hive checking.
On my 5th year with bees, 2 hives.