hmmm, I see.
In the end though, you hold a very LARGE stick. I suggest that you, on your own, decide what visitation schedule is convenient for your daughters and yourself, and offer those times to your AH, in writing, so that there is proof that you are not witholding any time from him. In your offer, clearly stipulate that on the recommendation of your therapist, you will not leave him unsupervised with the children for any length of time.
If he protests in ANY way, very clearly indicate to him that you are ready to begin custody proceedings demanding a legally binding order prescribing supervised visitation considering his continued addiction, which, if it got out, would most certainly threaten his job.
I know it's cruel to do it this way, but you aren't left with other choices. You are walking a very fine line here.
I think it's been suggested to you in other threads that you begin securing other forms of income considering he isn't going to be reliable for very much longer...