Welcome to SR, JJ408. I'm sorry you've had to deal with this, and yes- it's wrong! You might want to check out the Friends & Family section here at SR. Lots of people have been where you are right now.
It's hard to advise you specifically but it's great that you've worked to do what's right for your daughter. It might be time to look at the legal resources available to you. He almost certainly has a legal financial responsibility to you and your daughter.
You can't make him change, full stop. If he ever changes it will be because he chooses to. You can support him, you can help, but while you can lead a horse to water you can't make it drink. Now is the time to look out for yourself and your daughter.
