If you are having problems getting to sleep, switch to decaffeinated tea, herbal tea or decaffeinated carbonated beverages. As your flu symptoms subside, gradually increase your food intake back to normal for you. Your appetite for food should increase as you get better. Drink plenty of liquids. Water, tea, fruit juice, fruit drinks, carbonated beverages or broth based soups.
Liquids help thin mucous secretions.
Chicken noodle soup has been shown to thin mucous secretions. Fruit juice or drinks can be thinned with more water to increase tolerance. Flavored gelatin can be prepared with water or fruit juice and drank as a liquid rather than waiting for the gelatin to set. Avoid dairy products like cream based soups, ice cream, pudding or milk as they increase phlem. Any other foods are allowed as long as you tolerate them.