Router Settings and Screen time limiters
Parental control routers not only help you in managing your home’s wireless internet networks but also help you in managing and controlling your child’s access to the online content. Every router comes is different from the other so you need to consult your model’s manual.
OpenDNS Family Shield is an easy way to make your Internet safer, but does not work with all routers.
https://www.howtogeek.com/79998/protect-your-kids-online-using-opendns/
https://www.opendns.com/setupguide/#familyshield
There are guides for some of the more popular broadband services added below as an alternative.
Restricting screen time and wi-fi access for different devices.
Apple devices have their own Screen Time app already.
There are alternatives to the Wifi Blocker below, but it is a good first option if you do not have another one in use.
This page had other options to look into -
https://www.parents.com/parentsirl/best-parental-monitoring-apps/
https://uk.pcmag.com/parental-control-monitoring/67305/the-best-parental-control-software