With just a quick experiment, I can see this will work for small tables but for a large number of rows, it becomes very cumbersome.

I have now turned the text so I can read in pseudo landscape whilst still in portrait mode. However my “rows” are treated by Word still as columns. There is no automatic spill over to the next page as I would get in true landscape mode. Extending my individual “my rows” or adding extra “my rows” will cause the table to run outside the page boundary.

The only page spill over would come if I increased the number of “my columns” which would not happen.

Effectively I would have to create a separate table for each page, with the left hand column being the header.

Unless I have misunderstood.