Maybe I'm being optimistic, but I hope that during the hiatus, Togashi has been working on scripts and the story for the rest of the series. And that eventually, after he's finished writing it, he plans on passing off the art to someone else while he retires.
Togashi said that he does intend on finishing the series and this is the only way I can see him doing it, given his health.
Togashi said that he does intend on finishing the series and this is the only way I can see him doing it, given his health.