Are you measuring so you know if you're losing fat or muscle or both? If you are doing Insanity on low carbs and low cal you might be losing muscle as well as fat.

That program is intense, therefore glucose demanding, so personally I would add more fat and protein. Right now your body might be ever so slightly breaking down your stored muscle to meet the demand, because your daily protein is only enough to cover replacement, not to provide extra gluconeogenesis. And your fat is low for that amount of exercise energy believe it or not.