How do I adopt my brother's baby?

I am trying to get help on adopting my brother's baby boy. He is 5 days old and he tested positive for meth at birth. My brother is no longer involved with the mother. I know that he wants to the baby, but he has another baby coming in 6 weeks and he is in NO position to raise 1 child much less 2. What a mess! The baby is currently in DSS custody and they won't tell me anything. I really want this child to have a chance at a good life. Any help anyone can give me would be wonderful. By the way, we are in South Carolina.