Prognosis is generally good with prompt treatment. It should resolve quite uneventfully after a course of treatment.
Leaving it unattended obviously will make the prognosis guarded to poor as the condition can deteriorate into widespread septicaemia or even just wasting away from not being able to feed.
During this period, to stimulate feeding, it is best to feed live blackworms. They are very digestible, highly nutritious, easily taken into the mouth and attract axies by means of their scent and wriggliness.