Please pray for my son, and his recovery

Still asking for prayers for my son, but also including myself, that I will know the right way to deal with things.

My son. Please pray for him. He has fallen back into drugs and alcohol, and is on the streets now, again. He was doing so well, following the Lord, into the scriptures. Is it all false?
Not the prayers or the scripture, what he is saying is what I question. Thank you for all your prayers. God Bless