I have come to the conclusion simply eating more will heal sibo. No need for excessive restrictions to any things. Would I still eat rice ? No , I wouldn't bother with rice. I don't deny there are things that generally impair metabolism. But if every time your stomach hurts I think its because you haven't ate enough and especially not enough carbohydrate. I think I heard the body requires 260g of carbs daily to ensure function and things started making a-lot more sense to me because I rarely get that much.

Basic thesis: SIBO symptoms = running off stored fats / toxins / empty stomach etc, whereas you should he running off Glucose / carbohydrate / full stomach.

So I've just been trying to eat more and yes obviously I encounter the gums and what not but Im eating for the short term- even if I do eat toxins I can better clear them on a full stomach not an empty one.
Eat lots of food, in due time the body will speed up no need for restrictive eating and starving yourself that would just slow you down. Prioritize carbohydrates that work for you (waffles work for me) and the body should speed up. And make sure to eat lots of fruit!