How hard is it to get a contempt charge in family court?

So my husband and his ex-wife have a 5-year-old son together. She is the primary residential parent and he is the secondary residential parent. They went to mediation, and in the mediation paperwork it specifically states that she will "inform the secondary custodial parent of any non-routine medical treatment" and also "of any condition serious enough to miss school or be taken to a physician" Well last month when we had my stepson, he soiled himself several times, and told my husband he had gone to the doctor for it and his mommy gives him special yogurt for it. My husband tried asking his ex-wife several times about this, but she insists he's not on a special diet and ignored my husband's questioning about him seeing the doctor. We finally received his medical records today, and he was diagnosed with encopresis, a condition which makes children over potty-training age soil themselves. The doctor suggested that he eat extra fiber and prescribed Miralax (a laxative) once a day. This was in SEPTEMBER. We have had him three times since he was diagnosed, yet it was never brought to our attention. We are planning on filing contempt on Monday morning, and I'm just wondering if anything will actually come of this? Or if they will just brush it aside because this will be the first time we file for contempt? It is a Florida case.