Beyond fish oil, olive oil, balancing the intestinal tract with inulin or rifaximin and using vagus nerve stimulation, are additional therapies ever required?

If neurological recovery slows or comes to a halt and you’ve assessed things such as inulin failure, the solution is not to add another therapy but to look for a new source of physical (infection, dental pain, injury) or mental stress (home stress, displeasure with therapy or therapists, a change in school) as a cause of the decline in progress. It is very rare that some other form of therapy might ever be necessary.