You need to ease into it, like you know that thing when it's really hot and you're over heating and dehydrated so you go drink water but you drink a lot all at once and you end up throwing it up. Your body is just not ready for that, like our bodies don't like a lot of change all at once, we are very gradual things. Like if you're drinking one glass of water a day, start drinking four, and build up to a healthy amount.
Normally I would just say, Listen to your body, it knows what's best. But human's, at our core, are built to survive. In My experience, this will translate into today's world in one or two extremes, our survival brain say's "FOOOOD GIVE ME I MUST EAT AS MUCH AS I CAN TO SURVIVE THE WINTER" Or, and this is what my brain does. It will say, "I ate yesterday, I don't need more food, what even is eating? I don't need to think about that. That hunger button, we're just going to get rid of that. We don't need the reaction of being hungry when we always have food." and with water I feel like we usually lean more towards the, "I'm just going to get rid of that button that say's to drink water." So sometimes you have to remind you're body that those buttons exist and you just need to show your body that you don't have to just survive, you can live.