This response is from a NJ not WI lawyer. In general family courts only modify these agreements upon application to the original court which issued the order and a demonstration of change in circumstances. In general family courts do not consider unemployment a sufficient reason for lower or eliminating the obligation. If you stop payments on your own, without a court order, you are subjecting yourself to incarceration.
Mr. Sarno is licensed to practice law in NJ and NY. His response here is not legal advice and does not create an attorney/ client relationship. The response is in the form of legal education and is intended to provide general information about the matter in question. Many times the questioner may leave out details which would make the reply unsuitable. Mr. Sarno strongly advises the questioner to confer with an attorney in their own state to acquire more information.