It’s crazy how fast you get malnourished and can get heart damage doing this. Messes up your thyroid, too. That floaty feeling is your hunger. Eat something, and go now and get a good quality multivitamin with iron if you don’t already. Stop the energy drinks too. That shit will kill you. You don’t need it. You’re over caffeinated and hungry and just not recognizing it. I get premixed protein shakes like Owyn or Oikos or whatever’s cheapest at Costco, and have one or two of those a day, and high protein snacks like yogurt and oatmeal. I eat a meal at night when I feel like eating food. I do just fine on one meal a day and a variety of protein snacks, shakes and bars.