Resist the temptation to add boxes this time of year. Don't do it. It has little value and bees won't draw much if any new comb.
As Winter approaches; The objective for you and your bees is to fill every available cell with honey or syrup and get it capped, not force or expect them to build comb which is highly unlikely anyway in the Fall.
Even with a new queen she will not lay lots of eggs right now. She knows what's coming
Comb building is not a priority this time of year, filling any and all empty cells with food in anticipation of the coming cold..IS.