He can be in layers but do not let him get too hot. With a fever you go through chills and sweats this is normal. Make sure he gets plenty of fluids so he does not get dehydrated. Some warm soup or hot tea with honey and lemon can help to warm his insides up some. And keep giving him the Advil cold which will help with the fever, aches, and cold. It sounds as though you are doing as much for him as you can but shoudl the fever not come down or continue he might want to consider seeing his physician for some antibiotics for the symptoms he is having.
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