I have a theory that is based on absolutely nothing at all and so is probably a big steaming pile of nonesense. But I think drinking water is probably a bit like eating in the sense that the most natural way to do it is to consume a reasonable amount in one go and then none for a long/fasting period. Like eating 6 meals a day is less healthy because you’re constantly spiking insulin whereas a big meal followed by a decent fasting period is much better as your insulin and digestion return to baseline and autophagy is given a chance to kick in. I feel the same probably applies to dry fasting where theoretically our ancestors probably travelled long distances to find a water source, drank from it to satiation, and then carried on their way rather than sipping throughout the day. So I think intermittent dryfasting in an OMAD style is probably the happy medium and much better for you than little bits of water throughout the day, which I personally suspect does throw off your bodies ability to create metabolic water. So I think if you’re going to have any measure of liquid, have it in one go rather than spacing it out and it’ll be easier that way. But as I said this is only my theory and is probably bullsh*t.
Edit: there are quite a few success stories on this sub of people who have successfully implemented intermittent dryfasting into their daily lives long term and lost decent weight and improved their health.