Sundays is a nutrient-dense food, so many dogs eat less volume of it than they did with their previous food.
That lower volume does not automatically mean your dog is getting less nutrition. It usually means each bite is more nutrient dense than what you may be used to.
If your dog seems hungry, is losing weight, or you think the plan needs adjustment, use the personalized guidance in your account as your baseline and then make updates from there or contact the care team for help.