I think you just have to let your husband find his own way in his own time....BUT.....there are some subtle changes you can make at home that may help him. As Diemde said, try good LC recipes that you think he would like. Don't keep the house stocked with high carb/sugar junk. Talk about how great you feel on this WOL and how well you are doing. Talk about people you encounter online who are in a similar position to his. Like, "you know, there's this guy online who is doing just INCREDIBLY. He's lost xxx pounds in only a few months", etc. Sometimes hearing about others with similar circumstances who are doing well, can be motivating.

You might also start going for a walk after dinner (or some other time that would be convenient for you and hubby). Then, after you are established in your routine ask you DH to join you "to keep you company" not b/c he should exercise. Sometimes people will do things to help someone else that they won't do 'just' for their own benefit.