If you have a stationary job, then just plop a big ass water bottle with a straw on the desk between you and the keyboard for easy access. Water is the only thing I drink after only drinking iced tea every day until I was 18. Remove everything that isn’t water from your home. Turn your bottle into your fidget toy if you have to, having a straw helps even if you use it to open and close it. Hopefully before you know it you won’t even realize you’re drinking water. You don’t need to enjoy it. Same way people don’t enjoy medicine, you put up with because you’re an adult. If that seems too daunting, then you have some other demons you may need to tackle first before being able to get onto water.