Sorry, I still fail to see how leaving an animal without water is going to make them feel more comfortable. Maybe they don't need to pee, but they are thirsty instead. I have 3 close friends who are vets, including one who is a specialist who lectures for other vets world-wide. All of them choose to provide fresh water for all their animals, including the dogs, at all times.
Again, I know that there are people who do this and see nothing wrong with it. But it's not for the comfort of the animal.
I see your point.
I don't put him in an ex pen at night or a crate. I allow him to sleep in my bed with me, or under my bed, or wherever he wants to sleep in my room.
The positive change I noticed by taking up the water bottle from 10 p.m. to 6 a.m., is that he now is on a schedule with his food. He will eat his breakfast by 7:30 a.m. instead of me leaving out the bowl of food in his ex pen with him grazing it on it all day while I'm at work. Some days, I would come home and he did not eat all of his breakfast until around 5 p.m., and that would interfere with his dinner.
He has access to 2 water bottles, 16 ounces each throughout the day and evening, except now between 10 p.m. and 6 a.m., when it's bed time. To me that's better for him, than expecting him to "hold" it to pee outside.
I won't potty train him at 2 years old to use potty pads while I'm there, by refusing to take him outside when I know he prefers to go outside. It would be easier for me if he would go on the potty pad instead of me getting up and first thing in the morning taking him outside. However, he won't do his business on the potty pad while I'm there!!
He will use the potty pad as a last resort if I'm not there.