How long were you married and what age is your child?
What he wants and what he's entitled too are two entirely separate things. Most divorces end up dividing up assets and debts and they balance out this process by "equitable distribution". This means it may not be equal, it might be 20/80, 50/50 60/40 or any combination based off income earning potential and wages each person makes.
If he keeps blowing off visitations file for sole custody and during the entire process keep detailed records. Dates he's missed visitation, reason he gave why he gave, and dates you spoke to him.
During mediation the money inequality will come up and that's the time to dig in and be ready for the fight of your lifetime. This is MMA style, leave no survivors and get what you're entitled to. LOL
My attorney said it's all about three things for the most part. What do you have, what is it worth and whose getting it. You sound like you have a younger child that will need a multitude of things over time. Daycare, school supplies, out of school activities, and an adequate income to support your child.
If your incomes are far apart you may get more of the equitable distribution. Gather everything of importance that show income, and who makes what. If it happened during your marriage with the exception of an inheritance, almost everything is considered marital property no matter who makes the payments or who bought it. If you don't have a prenup then he's out of luck. He doesn't get to dictate how things will unfold.
Depending on your child's age, don't forget to include things that may not come to mind for the future. Get it in writing that he will provide child support for college reserved in case it's needed. Think of everything that may come up in the future, such as cell phones, car insurance and school sports, music, or things you might not need until teenage years. It's hard to think that far in advance if your child is younger, but if it's not enforceable I can almost guarantee you he will leave you holding the bag later.
Prepare to be aggressive but reasonable. If you get this sorted out make sure it's iron clad for details. Do not forget to have enforceable repercussions if he doesn't comply or doesn't pay. The details will be important. Due dates, and how long it takes before you can take legal action. Payments made need a specific date, (1st of the month etc). If you forget the details it will give him the ability to take advantage.
My attorney forgot to indicate when my Ex's settlement payments had to be made. It should have been the 1st day of the month, and that small detail allowed him to make it on the last day of the month. My first payment was 42 days after the one before. All payments after that couldn't be enforced unless 30 more days late, and he paid me late each month, on the 28th day after it was due. This made me wait a couple of days short of 6 weeks between payments, and I could do nothing.
I know where you're at. I've been there but it will calm down eventually. Hang in there. I know it's hard and its exhausting.