GAPS diet while nursing?

My LO is having issues with blood in her stool (yes we've seen her doctor numerous times) and I've tried cutting out dairy with no improvements. I was thinking of trying the GAPS diet to see if it would help heal my gut and therefore hers (I don't know if this would work). But I'm just curious if anyone has been on the GAPS diet while nursing or if anyone has any opinions as to whether it's safe to switch to this type of diet. We have been eating an organic, grass fed diet but have gotten more and more lax with it since pregnancy just due to the business of early parenting... I had been consuming meat, dairy and had no restrictions. Also to note I was diagnosed with IBS as a teen but was symptom free after researching diet, etc.