If this isnt an auto, who dont seem to mind long light cycles due to having an internal timer so to speak, they flower automatically obviously. So if this is a photo type plant, from what I've read need to be flipped to 12/12 once theyve become nearly the size you want. Advice on the strain sweet critical was to watch its growth during the veg stage and to flip the lights to 12/12 to stop it getting like a jungle, suppose it makes sense, long hours of light indicate summer, when you lessen the hours of light the plant thinks the seasons changing so will then put its energy into flowering and will stop growing