I concur with lip and reaper

the plant will still grow and it won't flower right away... it will still invest time and energy into growing into a mature plant before it flowers...

try to give it at least 1 week of 18+ hours of light

think of it like this.. just because you mate, doesn't mean you will produce babies... humans need to be old/mature enough to produce sperm and eggs...

there is a thread in this section that I started that shows a plant that is flowered at 15days with only 4 nodes....

iloveyou