Sorry to hear about your current condition. I have recently stopped drinking coffee, and cut down on the beer, so I’ve been conscious to replace that fluid.
As gout symptoms are very diet related, if I was in your position I would do some sort of fast or juice cleanse for a week or two. Not only does it reset your body, but it also resets your taste buds, making it easier to maintain a healthful diet.
Keep in mind you can also get a lot of water from foods. Not just salad but smoothies or yogurt bowl or steamed vegetables.
The actual paper is a lot more interesting than the linked article, and has no ads.
https://www.sleephealthjournal.org/article/S2352-7218(25)00089-0/fulltext