From the 7th to the 14th, it was tough. IV drips, Hofitol, Borjomi, ryazhenka, no hot food or drinks, small, frequent meals. It all helps, but you'll have to endure it.
Try not to let your stomach be empty. In the morning, without getting out of bed, nibble on a salty cracker—at least 2–3 pieces—and wash it down with water. Try to regularly shove something into yourself; find a food that doesn't disgust you and eat it. I really got by on salty crackers, bananas, milk; sometimes even Doshirak would go down like it was home)