drinker problem

My boyfriend is a heavy drinker I've been with him a year now we've been trying for a baby and I see that the more he drink it it is affect us from getting pregnant and I've been praying and praying for a baby it just haven't happen like yet but I can feel it is going to happen soon I just keep God first and just keep praying because I know one day he is going to bless me and my boyfriend with are baby