You will probably find most of the answers you need in this post, but in short, take the super off:
For next year, you may want to consider “brood and a half” or double brood boxes, so that they have sufficient stores for winter. Otherwise you are going to have to monitor closely over winter and give them candy or fondant once the weather gets colder. When it is consistently below 13°C at night, they won’t take syrup any more, because they can’t fan and dehydrate it enough to store it 