Just had a quick looks at my bees and one of the colonies is massive (new queen last year and sold as buckfast but not convinced) bees boiling over the sides like it's the height of summer. Also my cheap ebay scales has misled me and I have given them fondant when they didn't need it and it looks as though they have been taking it down like it autum and storing it. So question is although i have removed tge fondant and looks like she is laying well she doesn't have a lot of room so should I take out some of the capped frames and put in some foundation. Another option is to nadir this one with a second brood box ready for a split in a few months.
Having lots of stores is great. Having a boiling over colony in February is also great. Having lots of brood is fine.
Don't take any frames of food out. You never know , we might have a beast from the east again in March.
I would if you really do believe they need extra space either nadir or super with another box.