Methods of removing AUs from credit report for Chase 5/24 rule?

In light of the news that the Chase 5/24 rule will be applied to co-branded cards, I was wondering if anyone could share their experiences/knowledge (if any) on how to remove AUs from their credit histories.

My SO and I are both AUs on a couple of each other's cards, but without them we have a few slots left in 5/24 to allow for some extra apps before the crackdown. Would like to be able to free those up, if we can.

Also, if there's anything I'm not understanding about how AUs are counted in the 5/24 rule as well, please go ahead and correct me where I'm wrong.

Many thanks!