Ask your spouse to pay your legal fees. My spouse and I get along, but we're not that friendly. Then ask the court to order your spouse to pay. Well, the lawyer tells you about parental rights and responsibilities. I thought children were supported until they turned 18.
Every state has a set of child support guidelines.
Then there shouldn't be any surprises. But lawyers still come up with arguments seeking to persuade the courts to deviate from the guidelines, in an attempt to obtain the best possible result for you. Also, each state has a different set of guidelines. Tell me how much income you have, including interest and dividends. More importantly, I need to know your spouse's income, and the cost of child care and family medical insurance.