The Department of Corrections may take all that into consideration, but the main focus on early release will be if your husband received any treatment for his alcohol use prior to going to jail and was that information sent with him when he went in? If did, and it wasn't sent, make sure you get it to his counselor. He is likely looking at a minimum of 60 days and if he follows his offender accountability plan and does all the treatment sessions required AND the facts of his case such as BAC level, accident, injuries, etc are not out of the ordinary he may get out early to home release.
This is not intended to create an attorney-client relationship. It is absolutely NOT legal advice that you should rely upon when making a decision. It is general information about the law in Connecticut. You need to consult with an attorney who will ask you all the facts necessary to give you specific legal advice for your situation.
I agree with Attorney Black. Your husband should have had some form of alcohol treatment prior to the imposition of his prison sentence. Ultimately, it will be up to the Dept of Corrections to make the determination as to whether your husband would get the benefit of early release.