my son is a quiet guy, he doesn't speak so much, so asking questions or him talking about drugs and recovery was just about out of the question. He was depressed, later he admitted to me that he was ashamed of being an addict. How could he be so weak was one thing he said to me. So for me I treated him the same as I always did with the exception of lots of praise for things I saw him do that was for recovery, such as writing in his journal, going to meetings, not going to the bars. he still has a long way to go but then again so do I.
good luck