Please see my answers below. Please understand the answers are not legal advices but my opinions. Looks like your attorney is well qualified and you should rely on him and should not go to the court pro se.
I do not think child support is an important issue, along with the medical expenses, because you have taken care of the child for more than 2 years without the support. You need to talk to your attorney to see whether you can give up the support in order to get full custody.