It won't happen the way you think it will. Check at the bottom of the screen for similar questions that have been posted on this site.* It's a frequently-asked question.
Consult with a lawyer.
*I don't yet see links popping up, so do a site search!
Try this:
https://www.askmehelpdesk.com/search...archid=2156182
ScottGem said in one thread: "There are many threads here that discuss this and they all say the same thing. Termination of parental rights has to be granted by a court. Courts rarely grant it unless there is someone waiting to adopt the child or the parent is a danger to the child. Even in cases where they do grant it, that doesn't mean their support responsibility ends."