Of course your plants will wilt, shrivel and shrink when sleeping. In fact yours da1 may even resemble a pine cone upside down when sleeping.

Thats a sign your plant is healthy and one of the reasons I believe plants NEED to sleep and why I prefer 18/6 over 24/0.

Water first thing in their MORNING cycle...just not by the plant but by the soil and the weight of the container.

Once you get your good grow cycle going, it will be tough to over water them.

They look so sad when they sleep dont they????

Completely normal.