We’re on FTTC at around 44Mb/s which can just about deal with four simultaneous Teams calls, although we tend to disable video as needed to help with reliability and stability.
One small downside is that one of our children is having to use our bedroom as a workspace, meaning we have to be up and decent in good time to allow him to go live . We have an IKEA order arriving this week with a desk and other general bedroom upgrade furniture for him, so we can lie-in a bit if the opportunity allows.
We have a 10yo and 12yo and they are using the same timetable they would be on if at school, so are both pretty self-sufficient and self-managed. I occasionally have to act as IT support and network engineer but so far we have all stayed by-and-large online.