Welcome to the forum!
I don't have much to add to what others have already said, so I'll just pray for you and your husband.
Like you, I am also the only family member who fasts (or, rather, is trying to learn to fast). My wife - technically a cradle Orthodox, baptized in the Orthodox Church in her infancy, - does not see any point in fasting. However, I must say that I am blessed because she at least does not seriously object against my attempts to fast. She likes it very much when I lose weight and when I abstain for alcohol. So, for the most part, my attempts to fast are welcomed by her. Only occasionally, maybe once in 3-4 days or so, during long fasts she might grunt that I am making her life difficult, because "a normal human being would just eat this piece of sausage and be happy, while you with all this religion of yours always have these special needs, like a baby." My 24-y.o. daughter, also technically a cradle Orthodox, is very much like her mom in this regard - compliments me for not gaining weight and especially for abstaining from booze, but sees absolutely no point in observing the Church calendar, considers that a barbaric prejudice.
Well, who said that sticking to the Orthopraxis will be always easy, right?