Help, early outdoor flowering...

Hello all, I've got 4 plants outside, blue dream, super sour diesel, candyland, and og kush. They've all been outside since may 1st and they are doing well. However I noticed that the og kush is starting to flower and it looks like the blue dream may be starting next. The weather did change, it was overcast for a few days which shortened the days a bit and it got cold, the only other thing I could think of is that I fed them for the first time with biobizz fish mix Sunday... They are in 50-50 ffof and black gold plus 10% perlite. I don't see how the nutes could cause them to flower. I have 14 1/2 hours sunlight as of today, I'm in nor cal...

Any thoughts? It'd be greatly appreciated... I'm guessing they'll go back into veg, I really hope they don't go hermie on me...

Bump, any takers?

Basic question is do you think it was from the weather change? It vegged done until maybe 5 or six days ago. And also do you think it's worth saving?

I've seen this with other plants growing fine then a drop in temperature for a few days then they start to bolt when temps warm back up. Mother nature is an ass hole sometimes