I think if you get some ducks in a row, you will feel a bit more empowered. You need to have someone document how S is doing right now. NOW is your measure for the future. If S struggles with the visitation, if your H gets his way, then you have something to compare S's behavior to.
"You know, it's times like these when I realize what a superhero I am." Tony Stark/Iron Man
“Focus on what you can do, then do it with all your heart.” Lois Wilson