You know what? Whether you are there or not, you cannot "help" him with his recovery.
You have to do what is right for YOU and your girls and he will recover if that what he is determined to do.
You have a right to recovery as well!
Maybe when you are both recovered you can get back together and lead a happy and healthy life. Right now you both have a LOT of work to do.
Best of luck to you! We're here for you! (((Hugs)))