I would talk to your husband about your goals and how he can support you. I would let him know that you are limiting treats and don't feel like you can have big bottles of pop, etc right now. Maybe there are non-food ways he can treat you.
You do not have to eat everything your dh does nor do you have to put something in your body just because it is offered. You can control what goes on your plate and into your body.
Healthy meals are good for everyone in your family even if they don't have weight to lose.
I don't know what changes you are making to your diet and how drastic they are but I might start with having the healthy foods your family already enjoys more often. Work on switching to healthier versions of foods- less processed, more whole grains. Work on filling your own plate with more vegetables or fruits. Cook less or freeze leftovers right away. Try to eat smaller portions.