IMO they are a bit small to be flowering but if you wanted to you could put a bag over them or put them somewhere with total darkness to allow only 12 hours of light (like winter). Peace
sorry i was assuming your growing outside? if indoors just switch lighting schedule to 12 hours of light, you may need to buy a timer from your local hardware store.
dude im sorry.... but i think these plants are seriously suffering... if there were an ASPCA for marijuana , we'd be knocking on your door. and to answer your question, no. thats not how it works. 1st off: you can not have like 6-8 plants all chillin in the same 2 gallon bucket. they will never grow like that. 2nd: you have a mushroom in your pot? you have fungus growing in amongst your marijuana. thats not good. how much water do you give them a day?
also those plants look sad and malnourished. and even if you were going to take them apart and re pot them all, do you know how tangled those roots will be? is this a worth while strain? because if its not worth it i would scrap it
P.S. Read Read Read! nearly everything you'll need to know is in the growfaq and in past posts.
sorry to say it dude...but, they aren't really "growing" half an in. a day they are Stretching half an inch a day! Your plants should be putting their energy towards fattening up. How close are your lights?