As you up your caloric intake to re-feeding guideline amounts for your age, sex and height (keeping in mind that there should be medical oversight as you up your food intake of course), you may find you are quite thirsty.
Some of this thirst will be genuine and some of it might be anxiety-based responses to actual hunger cues. Either way, try to make your liquid intake always an energy dense choice.
Avoid drinking water, sodas, or fruit juices as these can fill you up and make getting to your intake guideline amounts difficult.
Choose ice-cream shakes, or fruit smoothies with whole-fat yogurt. Add nut or seed butters, bananas, and oils as well. One former member found freezing the bananas and then adding them into the blender with the rest of the fruit, whole fat yogurt and nutella made for a really tasty blended drink.
If you notice symptoms of extreme thirst along with frequent urination and any accompanying changes in vision, then please see your doctor immediately. Insulin regulation in the early phases of re-feeding can sometimes be problematic, although it will almost always resolve with continued monitored re-feeding.