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My name is Stephen R. Cohen and I have practiced over 38 years and can be reached at 213-819-1171. I practiced mainly in Los Angeles and Orange County, California. I am not seeking clients from existing relationships with other attorneys, and give only limited advise over the phone (the phone is primarily used to set appointments), these services do not create an attorney client relationship. I apologize for mispelling< as I am a lousy typist, My answers may offend as I do not believe in pulling punches or sugar coating the truth. Further regarding courts in other states my opinions are largely based on logic and what I think is the modern trend which is to consider the needs of the child.
I'm not sure if you have asked this question elsewhere, but because it is so similar, I will give you the same answer I gave to a very similar question.
He could also seek emancipation (removal of disabilities of minority) since he still has several months until he turns 18.
What exactly did your lawyer say that you do not have enough of a case for? Conservatorship? Visit your local law library and they can likely help you with forms to file a petition for emancipation, or you can review the Family Code for yourself.
Has he given a statement to CPS regarding abuse? Just because there are no marks on his body doesn't mean that CPS cannot take action. His statement alone may be sufficient to warrant action.