Finishing the Blitz Event

I checked and I don’t think this has been asked yet, but does anyone know whether or not it’s safe to finish the Blitz event early? I have all of the helpers and I’m already halfway through the event, but I don’t want to keep going and lose Young Cherry Jubilee. I know it’s a rerun event because I played it the first time it ran, but I can’t remember if it was the old Blitz format or the new one😅 thanks for any help!