You can do it. Remember getting sober is all about you. I know it doesn't help that your SO still has an occasional drink but I believe each person has their own "time" to get sober. Maybe at first he can keep it out of sight for you. But it doesn't have to be a deal breaker between you two. At first you might feel like everyone needs to get sober (friends and family) but you really have only your own sobriety to worry about right now. Good luck!
-Ted