<human>: Condense the text into a few key points

I never had to go to court but my the child support I receive was ordered by a judge, so my ex husbands pay is garnished. When the original order was made he was ordered to pay ~$300 a month. He came back and told the court/state/judge (through paperwork, we never stepped foot in a court room) the he was unemployed so the final judgement ended up being $97 a month total for two kids. He also changed the judgement stating that he cares for his kids 14% of the time. Which at the time was truthful. (I originally put 10%, tit for tat I guess)

Currently he is employed, I don't know how much he's making but I receive $27 a week due to back owed child support, which is the only reason I know he is employed. He also doesn't care for the children ever, maybe a day here and there but no more than 5% of the time do the kids spend with him.

Financially I could use the help, I've been able to support myself and my kids but money is tight and I would like to be able to save more money than I have been. Which, an extra $200 freed up on groceries and "child rearing expenses" would help me reach my goals much faster/easier.
<bot>: Will refiling the child support order likely result in more child support or are the chances we're stuck in this current arrangement more likely?