Perhaps give weekends a hard look. Why is it ok to go off plan for those days? Is it important to you to go off plan ?? Is it important to you to stay on plan ?

It worked better for me to have my family also live low carb. We played with different LC pancake recipes until kids happy with a recipe.

Bread mostly gone.... As I keep pushing for more meat and vegetables for everyone. My kids eat far better than most kids.
Meals can be low carb and delicious. Baked chicken and green beans. Dessert is rare. No longer normal daily fare. A thing of the past.

That's what helped me especially on the weekends.

Figure out what will help you stay closer to on track. Your needs are important. Think about why your plan is put on the back burner on the weekends. I had to put me first. Selfish? Yes. But my health is worth it.....and I dragged my family along, improving their diet.... and health.

(My kids don't miss school.)