Children are not "emancipated" from child support. They are "entitled" to financial support by the non-custodial parent. In general, children become emancipated by leaving their parent(s)' house and...
No. You are a minor with a child. Nothing more nothing less. To be emancipated you need to prove to a judge that you can support yourself and your child.
It is probably better to get the kid into some sort of inpatient intervention. If that is not reasonably possible you can remand the kid to the court by demonstrating that the kid is unruly. That is...