Inulin may "help with loose days" much more than you probably think. It may actually help to systematically decrease your appetite and insulin resistance, decrease ghrelin (the "hunger hormone") and increase leptin (the "fullness hormone") if you eat it every day. I can recommend Dr. Raphael Kellman's "The microbiome diet" book for more info, it is easy and exciting to read and has a fair amount references to scientific research in it, it may happen that you will never have to worry about calories again after you read it.