Hello! Those lights are intense and doing a great job but i fear you might have underestimated those! They seems a bit low @ 46cm! I think some phenotypes can withstand them but others seems to turn yellow and turn stems red and finally all leafs turn to crisp or falls....
Already your buds are quite big I think if you can keep those leafs green a bit longer and more of them you would have massive buds on your hands!
I am in the same predicament! Leds are great but very intense and i am still learning about them!
Good luck fello gardener!🤩