No, once per week is fine. Twice per week is just fine.
Your husband is the primary cook. Let him enjoy. When you cook, don't cook sausage.
If you want him to cook less sausage, then praise him when he cooks something you like and don't praise him when he cooks something you don't like. I got my wife to change the way she cooked when we first got married by doing this. It took a while, but it worked. Now, when I'm the primary cook, I cook what I want, providing its something she likes. (Example: she doesn't like "hot & Spicy" so when she is held late for a business/dinner meeting, I make jalapeno poppers, or stuffed jalapeno. for me.)
Sausage can be just as good for you as any pork meat. I like pork, beef chicken and most meat. I don't do snails and have offered many people that say they like escargot to come and get organic snails from my garden, but have never gotten even one taker.
Smile. Be happy. Enjoy that your husband likes to cook for you and your family. Always have the attitude of gratitude.
Good luck to you and yours.