They're oblivious to the change (slow personality shift)

Holly paused for a second, looking confused before shouting into the living room "Hey mom, are you ready to take back over, you know I can't cook". His mom in the living room seemed to snap back to reality, looking around confused "of course dear, sorry, I really had to reply to that. Thanks for looking after it for a min". Josh's mom walked back into the kitchen and began cooking, humming a familiar tune as she didn. Holly skulked back to the living room abd began scrolling her phone.

It appeared, apart from being in each others clothes and swapping places, their personalities had remained the same. Josh was slightly disappointed, he'd been hoping for more entertainment. After a fairly uneventful dinner they all retired to bed. Anna had gone home earlier whilst Josh was experimenting and he was glad to have the whole bed to himself as he flopped down and fell asleep.