I think if he's not paying child support then you should go to court to get his wages garnered. As for him caring about his child. Lots of people don't care about their offspring or the person they had sex with to create them with. Sex is sex and has nothing to do with love to them and they are quite capable of compartmetalizing the two things so that when things like this happen they can easily walk away. That doesn't mean that they should be walking away from their financial responsibility. If he doesn't want to have any responsibility then he should get himself snipped.
“The willingness to accept responsibility for one’s own life is the source from which self-respect springs.” ~Joan Didion