I would not limit water unless it is an hour or 2 before bed and an hour before you leave the puppy alone.
The puppy should have as much water as he wants.
Sinister "The Prince of Darkness" 4 yr old black male GSD 3.11.09
Draco "Dakota's Unbreakable Vow" 5.5 mth old male Dalmatian 6.30.13
Cats: Chaos, Mayhem, Monster, Wicked