Fever is a body's indicator that digestion is compromised. It is sign that your body needs a break from food and needs time to digest the accumulation of toxins (known as "aama" in Ayurveda) in its channels . So what is the solution?
Fasting, or denying your body any food until you develop a good appetite is the way to ease the burdened digestive system.
Recipe Option 1
Drink tea medicated with kitchen spices (1 tsp of cumin seeds, 1/2 tsp of fennel seeds, 1/8 tsp dry ginger powder) in 4 cups of water boiled down to 1 cup. Drink this morning and evening. Make fresh every time.
Recipe Option 2
You can also drink Chamomile tea throughout the day, while staying away from food.
The bitter taste of chamomile and the digestive effect of the spices stimulates the weakened digestive fire. The body's own digestive fire then is able to take over and clear any accumulation of toxins in the channels. When the body's elimination and hunger return back to normal the episodes of fever should diminish as well.