Also, yeah it's okay. It just means you're heavily dehydrated. Continue drinking water. After a couple more days, you'll reach a level (around 2 liters per day) and then you'll have a little more consistency. You won't feel the extreme thirst, but you will still feel the need to drink. It just turns into a good habit.
Additionally, Drinking water like that has a TONNNN of benefits like I'm pretty sure you've noticed changes in how your body feels in your 4 days.
I bought two bottles: one for my room (2 liters) and one for my backpack (0.75 liters). It feels like a fuel for my body to run and I don't get tired or have headaches after going through the city in taxis for 2+ hours per day.
P.S. I don't drink 2.75 liters. I drink less than 2 liters.
Jan 26, 2021