Close, but you both have the queen in the wrong box /wry chortle/
Put the queen with the nurse bees and
all the queen cells away from the scout bees and other flying bees. Heresy I know
The bees will then tear down any queen cells, including the ones you would miss. No-one ever believes me when I tell them this, but to date 100% of queen cells have been destroyed....no work for you.
Leave a frame of sealed brood in bottom box.....and check it for emergency queen cells before reuniting. Alternatively you can add eggs or a frame with queen cells to bottom box if you want to rear another queen in this box.
Leave all alone for at least 7 days..Honey production continues as normal.
After 7 days or so all your scout bees, which are the major players in finding nesting sites and doing the buzz runs to instigate swarming....have now matured into foragers and lost their swarming fever.
At this point you can re-unite.
If you use a Snelgrove/Horsley type board with a mesh simply stick boxes back together after a week..
It's the reverse of what we have been taught but makes infinitely more sense once you realise the part the scout bee play in the swarm process. They may not be responsible for the initial conditions that instigate swarming but after that they are the major players....sticking queen with scout bees that still have "swarm fever" in my experience leads to them still swarming in many cases.
So far I've done my swarm control like this about 20 times in the last 3 years and only one re-unite showed signs of wanting to swarm after reuniting back. You don't even have to go through the bottom box until you unite.
It's all done and dusted in 7 days (or longer if you wish).
Dead simple and dead effective.
If you only have one brood box to start with even easier, double brood requires a bit more sifting to get frames with queen cells into top box....and there are even ways you can do it without finding the queen.....but enough for tonight.