add in 2 servings of fiber one with your last meal of the day and then after a week or two add in one serving after your first meal. i use the walmart brand one that's similar to metamucil. get the sugar free one because they ones with sugar are worthless. i dont have ibs but i have destroyed guts that they have no idea what it is and that has helped me out big time. if you are going to be eating a lot of broc then add in a bit of sour kraut or kimchi. broc will irritate the shit out of your guts solo in a lot of people. i have tons of tricks and tips to get guts as close to good as possible