You may set up a voluntary allotment to have child support taken from your paycheck and sent to the custodial parent.
If paternity is not established, then you do not have the obligation to provide adequate support for a child. You can start, stop, or change a voluntary allotment at any time. To start, stop, or change a voluntary allotment, you must fill out a DD Form 2558. You can find DD Form 2558 and submit a request online here.
The court cannot stop a voluntary allotment for you, even if there is a child support court order. It is your responsibility to tell DFAS about any changes. If you stop paying child support through a voluntary allotment, and later paternity is established, then civil law applies. This means that you may have to pay past-due child support payments (arrears) if you are no longer paying through a voluntary allotment.