Family Sharing for family of 7

Hi. Does anyone know a way to work around the 6 person limit for the family sharing with apple? I was trying to create an apple id and add my youngest child to our family sharing plan so I could use the screen time function to limit activity and to share media purchases between all of our kids. Apparently, Apple doesnt like families with more than 4 children. Having two children sharing an apple id is a pain when trying to message one another and to track device usage. I would have to create a separate adult apple id just to add my youngest as another child account. That would mean I need 9 apple ids for 7 of us in the family. I spent thousands of dollars on media through apple over the past couple years. I would need to rebuy everything i've already bought in order for the child not allowed in my family sharing plan to be able to access them as well.