Grace, I am so sorry!
I have my suspicions that difficult child is still using. He told you he still needed suboxone, that if he doesn't take it he feels sick. His attitude is still awful. He is making your life a living hell. If he doesn't go to work he risks losing his job. To me, this doesn't sound like a young man trying to overcome his addiction and move his life in a positive direction. His behavior reminds me of a person still using.
Now he is starting to effect babygirl,and the sanity of your nice quiet home life. How much do you have to sacrafice for difficult child?
Where else can he go besides your house?????