Light question

I hope this is a joke. 2000 ppfd for 12 hours is 87 DLI. During flowering photoperiodic Cannabis average limit is up to 50 DLI in CO2 enriched environment, up to 40 DLI in non enriched environment. Veg limit is 55/45. The first week of flowering we just cut the DLI in half in comparison with Veg (50/2 for example) Thus giving the plant clear signal to start flowering. Than add gradually per 2-3 DLI each week. On 7th week we gonna have 40-45 DLI. Then decrease again per 5 DLI each week to let it ripe and save THC. You don’t need infinite ppfd on the canopy, instead you need to make illumination fading from top to bottom as less as possible. That’s why very powerful lamps are used in industrial setups, and they are hanged up to few meters above the canopy. Good luck!