While I have Internet (I'm working from home now), many people at our local schooling do not, as I'm 'in the city' and 'in the country' simultaneously. This also means I'm on severe lockdown, heh - no travel, no leaving the property save one person once a day, no going 5km from house. Our school has created specialised information packets for those students with poor connections, so they have a big pack and specific items for each day to work through. Not sure if this would help your teacher friend, but they are clearly giving support to the teachers. The school does the printing and has a helpline to resolve issues.
The school library also mails out books for the students.
They have also been very clear that teachers are not expected to maintain previous formats. My daughter tends to complete her days' schooling in about 1 1/2 - 2 hours. Other children will take longer, or less time. I am lucky. My kid is neurotypical and very good at entertaining herself - but it is hard on her. Both of her parents are working, and in my case, I am frequently in multi-hour meetings that cannot be interrupted. I say 'cannot' because my clients and superiors are getting used to seeing her head pop up
For us, the hardest thing is PE. It's winter here, and very wet. I live on a steep slope, and everything is a foot deep in mud. It's cold, there's a tonne of leeches, and exercise outside is not remotely appealing. My family is great on academica, but we don't even HAVE a football 'to kick around' or, indeed, somewhere to do it. Once it warms up, it will be easier.