Yes, a separate child support agreement (or such an agreement as contained in a divorce decree) can be re-opened or "modified". Extra money for the support of the children can be requested. Since you are now living in OH the divorce modification would be heard there. As you may or may be aware, OH has statutory guidelines to determine child support based on the gross incomes of the parents, with an allowance for certain deductions before calculating the amount. Factors that are considered include custody arrangements, health insurance and special needs of the children.As indicated, the guideline amount may be modified depending upon circumstances. In fact it may be modified either up or or down. Many times the spouse receiving child support goes to court thinking they will get more money when it fact they end up getting less. If the financial circumstances of the parties have changed so that the paying spouse now makes less and the spouse receiving the support has increased their income, there could actually be a reduction in the amount of child support to be paid. And this seems to be the situation in your case.At this point, you may want to consult further with a divorce attorney in your area.