I did give my toadlets a water dish right away, but it has to be very shallow (below the toad's shoulders) and be something they can easily climb out of. They have always liked to sit in it and soak.
I imagine you'll find that the toad will bury itself during most of the day, usually in/under the hide because it feels safest there. I've taken to feeding mine just before bedtime, since they are usually all above ground then.