I have found drinking hot water instead of cool or cold water helps in drinking less water. People on dialysis need to restrict the amount of fluids consumed. Water is probably the most commonly consumed fluid. So it is important to restrict the amount of water consumed.
When I drink water at room temperature or water that has been cooled, I find it easy to gulp down a lot of it. In fact I need to gulp down a lot of it for my thirst to feel satiated. There is a region in the throat that needs to feel the water for some time for this happen.
I switched to drinking hot water instead of cold water a few days back. I found that I could manage to drink much less than I needed to drink with cold water. I felt satiated pretty soon - with a couple of sips. I can't gulp down hot water - it's hot - I can only sip it. And that's the key. Sip the fluids.
In the end, I drank much less than I usually do.