it won't transition until it has a long enough, uninterrupted dark cycle. You don't need any special trick to do it. There's no way to make it happen faster. Once the hormone production goes over a threshold, the plant is changing gears before you can see a thing. If worried about the greater intensity of light, that might be something to slowly increase over 2-3 days.. but the lost photosynthesis might be a greater loss than any gain.. it's not something you can assume or see with our eyes.