Need help - how to handle large amounts of data input/tables

I see your pain.

You might also consider managing the data in something like airtable where they will be able to manipulate and work with data. You “might” be able to then create calculated table arrays and more that you can pus (zap) to a webflow CMS rich text field, then display with something like this. I haven’t tried it but it could really help you keep the CMS structure light weight in Webflow.