@Msorganized01,
Actually Msorganized, with all due respect, I disagree with your advice.
Fighting over money is a bad idea. It usually means that both sides get less.
Because of taxes and state benefits, if they work together they can probably both end up with more money. In many cases where one parent makes considerably more than the other parent, giving the tax benefits to the first parent can mean considerable tax savings for them both. If it were me, I might say... look by doing it this way I can save $5000... and I will give you $2500 of that. That's a win-win situation.
If the issues are complicated, by paying a couple hundred dollars to a lawyer you might end up saving a couple of thousand. Personally, I couldn't afford not paying a lawyer.
Talk to someone you trust. I would highly recommend spending one or two hundred dollars talking to a lawyer.
Obviously you shouldn't blindly trust the father in this case, but if you can figure out how to work together to lower taxes and maximize benefits, you may be able to both come out ahead.
There is such a thing as a win-win, and in child support negotiations, they are much more common then you might think.