I think people want to help your turtle but we can only do it if you do the legwork yourself. We cannot do it because we don't live with your turtle.
Please take this advice for the sake of your turtle......tell me via email or someone else you trust that you have met here, where you live so we can help you find a vet nearby or maybe there is a long-time turtle keeper who might be willing to help you and physically go over to your house and help the turtle. You need to do something for the turtle, or it may die. This might mean going out of your way to take it to a vet or spending the money needed to get it live insect food.
Until you find a vet and get it live insects, try this: soak it 3 times a day in lukewarm/tepid water about an inch deep for 10-15 minutes. Keep it warm. If you do not have a thermometer in the setup please get one so you know how warm the turtle is. It needs to be kept at about 80 during the winter months. SInce it is sick it probably has not had the correct temperature or diet.
I have written an online box turtle care book and you can read it to find out how to properly care for the box turtle. It is at www.boxturtlesite.org. Please check it out.
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Tess
Kingsnake.com Forum Host