They haven't done the split for a while. The reason they don't care about the bedrooms is that they chose where they wanted to sleep. I think for the shopping task this week, they should be split into two groups. The winning group gets the luxury side of the house with a luxury budget and and losing group get the poor side with very basic rations. But BB shouldn't tell them what will happen until after the task.
Hopefully, Becs would be on the losing side as she is getting right up my nose at the moment.