Hi, I just wanted to add some encouragement that you may be able to "rub off" on your husband.
I have been together with my significant other for 3 years now. He is open to trying new foods and eating meat-less dishes, but he still loves his hamburgers, etc. My goal has never been to 'force' him into eating healthier like me. However, I always compliment him when he makes healthy choices, and as a result he started asking me what the better "option" is for various things he likes to eat.
For example, when we first started dating, he'd eat PB&J sandwiches for lunch on white bread with trans fat-laden PB. Now he eats whole wheat bread with natural PB. Before he'd buy breakfast cereals he thought were healthy enough but really had tons of sugar; now he buys lower-sugar whole grain cereals. Before he'd eat veggies sometimes if served at a restaurant with his meal but not really make any at home. Now he always has baby carrots with his lunch, eats steamed broccoli, etc as sides at home. Before he'd ALWAYS have beef or chicken for dinner as part of a dish like spaghetti with meat sauce OR something egg-heavy like quiche. Now he eats a dish like that maybe 2-3x week but likes to eat potatoes or brown rice with all kinds of beans for dinner.
I praise him for eating healthy beans & rice instead of beef, but I don't criticize him for eating beef. Also, I emphasize things about beans & rice that appeal to him OTHER than health. For example, he loves that cooking a pot of brown rice and opening a can of beans is so EASY to make and so CHEAP to buy. He loves saving money, getting a good deal, so he relishes these meals more.
I'm hoping some day I can switch him from 2% milk to nondairy milk, things like that, but I have found the best method is to be patient and gradually make gentle suggestions.