Forms, hearing information, cost to file, ordering a transcript, public defender information, virtual help center, and question submissions on cases. You will have to fill out a set of detailed forms and go to Court, but dissolution only takes 30 to 90 days from the time you file until your marriage ends.The Domestic Relations Clerk of Court is located on the ground floor of the Cuyahoga County Court House at 1 W. Lakeside Ave. Give the clerk your forms to file. Who Can File for a Modification of a Divorce Decree? In Ohio, parenting plans, including child custody rights, may be modified. Support payments, including both child support and alimony, may also be changed. In order to seek a modification, you need to file a petition with the court. You can use the change of circumstances as the reason to file for modifying custody. Once you file a petition for dissolution with attached agreements, a hearing will be scheduled between 30 and 90 days after filing.