Hi Lillie, what an awful position to be in. If you feel yours or your baby's safety is threatened then of course you've done the right thing. From his POV, he's probably not going to seek help unless he suffers some consequences from drinking. It sounds like he's taken advantage of being away from you to sink further into his binge, so it's not promising.
Can I suggest Al-anon meetings, or even a domestic violence counsellor? You need support just as much as he does so don't neglect your own needs while worrying about him.