Perpetual Grow Among Other Things!

Ok so i forgot to ask .. All my plants in flower are acting like they are in flush and just bud swelling.. All fans on the three plants that where in the worst of it are dying off and they are looking like time to chop soon. Is this common for root bound plants? Can I continue to run them with no fans? Chop them? Some are like only 5 weeks into flower.... They even smell of harvest soon ..lol
Totally clueless...

Thanks in advance anyone..

FE