Am I missin the strain as I read? I've been off lately. Anyway- the bloom nutes shoul help them kick in. Rule of thumb around here is to stay on veg nutes until verticle growth has stopped. That will help maximize yield. The other side of that is that switching early will help bring it on quicker.
As for flowering -you should see your nodes start to alternate- it'll almost look like the meristem (mainstem) is changing- or splitting at times. It'll get Kind of zig zaggy like a clone. Once that happens your about to start to blow up.
Some strains do way better with stress than others. With some strains (autos) you get permanent stunting - and with others it's almost like they were just on pause- and they catch back up with size and finish a couple weeks late. The type of stress also has a lot to do with this. Feeding stress (deficiencies, lockout, burns , toxicity, over watering) and root stress seem to permanently zap one more so than stress from trauma to the topside- in my experience/ opinion.
Quite likely you have delayed the real onset of flowering by a week or two- but it's no biggie- you may lose some weight compared to a perfect grow, and your plants may take longer to finish- but it's nothing to sweat.
Look for the alternating nodes on your new tops/ arms and when you see that... It's about to blow up.
That alternating growth will be explosive when it happens, a couple inches a day at times. Once the reticle growth stops- they start to swell quick. Pictures bro... And the name of the strain and which bank/ breeder it's from will give anyone paying attention a lot more to go off of- and probably net you some more concrete answers based in other people's grows o the same strain.
Also- you said they had shown sex- but now you are saying they haven't? Which is it, I am confused. The hairs are pistils- and if you haven't got any- you haven't got a plant that has sexed yet. Unless he has balls.... Haha
Also- you may continue to get secondary branching fromthe "armpits" tha will blow up with bug also. Sounds like you at vegging still. Get back on the veg nutes and support tat growth for a better yield!!