Here's the deal. The child always has needs and requires support from the parents regardless of the circumstances in which the parents find themselves. I know that this is not the answer you want, but this is the concept. You must continue to pay in accordance with the order. You can potentially file a petition to modify the order based on a material change of circumstances, which would be your health.
This answer is offered for informational purposes only. It is not offered as, and does not constitute, legal advice. Laws vary widely from state to state. You should rely only on the advice given to you during a personal consultation by a local attorney who is thoroughly familiar with state laws and the area of practice in which your concern lies.