Your nute mist maybe what's wilting them. You can burn plants up with misting with other than PH'ed water. Don't mist with lights on that can wilt them too. Nute mist once or twice a week

I fried a bunch of leaves off a plant with nute misting. It could also be the change in the light. Just make sure they have water and let the soil dry in between. Some strains can take more stress than others. Make sure the light is not too close, that can do it too.