My child has been on the protocol for a while with great gains but diarrhea has not improved. Does that mean that SIBO is not resolved?

If the diarrhea started with the protocol, it may be from the fish and olive oils. Try splitting up the oils so he gets it in smaller doses throughout the day. If the diarrhea was present before starting the protocol and it does not improve with either inulin or rifaximin and you are seeing gains, I suggest having your child evaluated by a pediatrician.