well the grow looks good.. it should have shown signs of stress by now, as mine showed signs within 8 hrs... devastating signs... ya got off lucky =)

so i'd say to switch to flower, do wat u have to.. what i would recommend (in some way) is lessin the amount the soil, lower the plant, so that u have more space for it to grow, (somehow).. that way ur plant cant grow a little more... remember the plant will double in size when its in flowering, so u just might not have to do that at all... but do hope that the plant can handle the weight of the buds when they develope..