Hi and welcome here 
It sure is difficult to quit drinking if your partner doesn’t. But many of us are in the same boat like you and managed to quit and so can you.
We can do a lot more then we think. I think addiction makes us insecure and we have get into our powerzone again.
For now focus on you now. Your goal to be sober. Set an example for your partner. Maybe he sees during time how your sober life suits you and wants that for himself too?
He wouldn’t be the first 
Here is a thread you may want to read:
Hope to see you around often, it helps to be here much!
If you are a bit like me…you will notice it’s much easier to quit drinking instead of trying to moderate it.
Moderation is a lie when you are addicted like me. Been there, done that and it didn’t work at all 