Sounds and looks fine to me. Vegging plants do that at night. As long as they stand up when the light comes on you're doing fine. Flowering plants will also do that the first couple weeks in 12/12. There is only one way to water plants -- WHEN THEY ARE THIRSTY--. There is only one way to tell: When the pot loses 50% or more of it's weight. Never feed or water a heavy pot. They need to dry out between waterings so they can obtain enough oxygen for the roots.