Fill in the date of the order now in effect, and the names of all children named in the order. Petition for Modification.Modifications to child support will not happen automatically. Download a free child support modification form to propose changes to a current child support agreement. Available in PDF or Word format. If so, you can file for child support modifications. Parents can petition the court for a review and modification of their child support order at any time they feel there is a substantial change in circumstance. If either parent wants to modify child support (i.e. To increase or decrease payments), they will need to file a modification request. Incomplete Petitions cannot be processed.