Here's what to expect when you request for a modification of your child support order. Click here to learn the steps in the modification journey.You're always welcome to change the way you make your child support payments, but the court-ordered amount can change only through a court order. Step 1: Fill out your court forms. Fill out the following starting forms: â—‹ Petition to Modify the Parent-Child Relationship. If you would like to change a child support or custody order that resulted from a SAPCR, you will need to file with the court for a modification. Explore comprehensive child support modification forms and procedures for navigating child support changes and custody modifications effectively. The noncustodial parent then asked how they came up with that amount and the caseworker told him based off his income from his employer. Filing an answer to a complaint for modification is very simple. Chapter 1: Motion to Modify Child Support - Introduction.