AsNoriuanswered grow question 8 days ago Your plants dont look healthy, i would sort this first, then would think about flower flip.
Usually i gradually raise intensity, for week 3-4 of flower i am at max what plant can take without burn signs. Last two weeks of flower - i blast them max what i can get, even drop light distance to plant to around 20 cm, then i dont care about any burns, still watch out for signs of bleaching or foxtailing.