I also tried Fiber Ghoice but switched for 2 reasons - 1 I was still getting some bloating -- and it's listed as a possible culprit -- and 2 - I also heard that the chewables like that can be bad for your teeth - especially if you take a lot of them - and on a regular basis. That certainly describes an IBS supplement. lol Rather than take that chance -- I just switched. I do take the travel size with me for emergencies -- when I might not get any water that isn't freezing cold... stuff like that.
6 - 8 weeks sounds like a very doable timeline -- as long as the fiber is agreeing with you.