Flowering

must be an autoflower? or, you are giving it too long of an uninterrupted dark period. Anywhere near 10hours per day *could* put it into flower. If you have months before it needs to be transplanted, and it is a photoperiod plant (not an auto), then increase hours of light per day. It will "re-vege" over the next 4-5 weeks, since you are fairly deep into flower at this point. Little budlets are probably 3 weeks into bloom phase. So, this happened 3 maybe 4 weeks ago, if that helps figure out why it happened. ppl use 12/12 for bloom phase because it covers the oddball genetics that may need more than 10 hours of darkness. Also, as long as you provide same DLI it won't matter whether you run 12 or 13 hours per day (13/11 is always an option for a light that need more oomph, though). Just remember, the dark period controls the phase of the plant. When you give it 10 or more hours per day it'll go into flower.