He's drinking ... he might drink tonight ... he might drink tomorrow ... he might drink if he's in early recovery ... he might drink, use or substitute even if he is recovering years down the road.
You're worrying ... worrying ... gonna worry ... and worry some more ... and worry forever. Epitaph: "RIP. She worries no more." Surely, that's not what you want for You or what you're going to let happen to Yourself. The choice is in your hands though because you can't count on the A.
Trust isn't the issue. What you're dealing with is an addiction. He's going to drink, use or substitute unless HE decides he no longer wants to and will not live this way, AND he works a recovery porgram diligently for life. Do you want to worry about his drinking, his decision AND his recovery too then? Surely not. TRUST me, that's where the path you're on will lead without a turnaround.
What you want is a recovery program for YOU, that will stop your addiction - codependency - obsessing about controlling or changing the A's behavior. The program I would suggest is Al-Anon. Read up here on SR about codependency too.
Attacking, caretaking, covering up, enabling, etc. ... worrying is just A BIG WASTE OF TIME AND ENERGY when the problem is alcoholism or addiction. Use that time and energy on YOU in a way that will make things better for yourself. That's not selfishness. That's self-care.
All the best to you.
