I'd recommend drinking when thirsty on a keto/carnivore diet, more water doesn't equal more hydration, the more you drink the more you urinate out your minerals, so monitor your urine you want it to be faint yellow, if it's clear you're drinking too much water, if it's dark yellow you're dehydrated and need more water/electrolytes.
That does work for some people, but not for everybody.
I've been on a meat heavy, keto diet consistently for over 3 years. If I drink only when I'm thirsty, I end up drinking too little and I start suffering symptoms of mild dehydration: muscle cramps, dizziness, digestive issues, etc.
Consuming enough sodium helps your body absorb and retain water, which means less urination an less mineral loss.
I take one pocket of LMNT a day, and supplement Magnesium Glycinate. The rest of my sodium, potassium and magnesium come from food.
Maybe the reason my body requires 88 ounces water daily is because I don't drink tap water, milk, coffee, tea, or diet sodas.
About half the fluid I drink daily is purified, seltzer water plus distilled water with LMNT. The other half is plain distilled water. I've been drinking distilled water for over 4 years.