When I got sober, my husband promised to do the same. Unfortunately, he couldn’t keep it up more than a few days at a time. I had to make my sobriety my top priority. I quickly learned that his actions had no bearing on my decisions and my decisions were mine alone. I had to keep my focus on my own recovery. My husband’s drinking got worse the longer I remained sober. It was really hard but I got through it by leaning on this forum and AA meetings. All I could do was lead by example. It took over a year and half but it worked. He finally saw the benefits of sobriety and joined me. I’m 2.5 years sober and he’s now 7 months.
There are quite a few people on here with significant others that still drink. The 
at the top is a great tool to read up on other’s experiences. Also, here’s a link that has some recent posts you may find helpful.