What is the danger of forcing them to expand? The reason I ask is because I had a hive that I wasn't drawing out the top super deep that has no excluder.
The system of brood area of bees is quite delikate. They coltrol temperature inside very narrow area. If beekeepers try to "help" or force to do what bees are not able to do, colony will meet draw backs. They destroy much larvae and pupae. When you look after a week what have happened in the hive it is not nice to see.
I have learned this through hard way. No one have warned me.
I have seen too that bees occupy frames when they are ready for that.
When you look in the morging into hive, you will see that colony is quite in clump and by day they have spread everywhere.
For exacple it isa said that queen try to lay eggs towards upstair. When I begun to use thermo cabel on bottom board I noticed that queen like to lay eggs in first box near bottom. Lowest box is too cold.
When you chanege brood box, after one week you will se what have happened near entrance.