Child support may end when your last or only child becomes emancipated. Emancipation happens if one of the following is true.
If you and the other parent have a written agreement saying that child support keeps going after the child turns 19 years old, then you will follow that agreement as to when child support will end.
If your child is mentally or physically disabled, child support may be ordered to be continued even after your child turns 19 years old.
If your child is still in high school or an equivalent program when he/she turns 19 years old, child support will keep going until the end of the month after graduation.
If your child stops going to high school, but later goes back, he/she keeps getting child support until the end of the month after graduation. However, child support will usually not go beyond the age of 21 unless there are special circumstances.
Wait for the court's response to your Motion. You may be required to attend mediation and/or a hearing may be held.