Update Property Age by weeks from 0-4 for multiple childrewn

Hi everyone,

The goal is to use time delays to update of the child age profile from the point they enter. E.g. my child’s age was entered as 3 weeks. 7 days later the property updates to 4 weeks. 7 days later the property updates to 5 weeks, etc

And also allowing the ages of multiple children to be tracked and all up to the age of 4. 

The flow we’ve started with only does one child age and is so large it can barely load. Does anyone have any suggestions or work arounds for this? Truly appreciate any help.