Hi there. I was totally asymptomatic when diagnosed, so, personally, didn't feel I needed to heal, but others have.
Without too much detail, could you tell me what sort of GI issues you are having? Are you finding yourself spending a lot of time in the loo? If you are, do your, erm,,,,,, "outputs" smell rancid and float? Or, alternatively are you constipated?
Are you bloated? Do you have indigestion, or pain anywhere? Do you have reflux?
Changing our diet can certainly upset the balance in those areas, but it's hard to make any suggestions without a bit more detail, unfortunately.
Having said you have got your blood sugars down into a better range, what are you now eating, and how does that differ from before your diagnosis?