There is only one real way to enforce child support (unless the support obligor lives in a different State than the support obligee). That method is through the court's contempt powers.
You can either file a case with the AG's office or you can file a motion for an order to show cause for contempt in court and attempt to prove the contempt yourself.
Contempt is difficult to prove, because procedurally, it requires proof beyond reasonable doubt. So, although you can certainly go the "do-it-yourself" route, you my be biting off a big "chunk" of work for yourself, unless you hire a lawyer, which will cost money -- and that's probably something that you don't have.
Hope this helps.
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