Splitting up a household w/o moving to yet another household

I do this to move children around to households I play most often so I can level up their skills lol

Invite Person A to the current lot and ask them to join household. When prompted to select which members to split, swap Person A and their current housemate to the household u want them in and move the other household to Person A's current residence. If that doesn't work, u can do it a single person at a time using the same steps, but split alternating sims. I hope I explained that in a way that makes sense