Creating live text fill in a shape that links up

Hi all, I’m hoping there are some whizzes on here that can provide a smarter way to achieve the outcome I am looking for.

I am developing sock designs, and as such, any design that overflows over the left of the rectangular shape needs to connect with the right edge design - to ensure it is a seamless and continuous image.

I am trying to do this for a text fill, where the text may change for future designs (i.e. different word and number of letters).

Currently the process I use is to use the type tool line by line, creating the outline and then ensuring the left overflow letter is centred over the edge at a similar position to the right edge - to ensure it matches up when applied to the 360 sock design. Then I apply a clipping mask.

I have previously just created a grid with a text fill per block - the issue is when the word changes, so I would need to create a template for each variation of different word lengths.

Any help or smart suggestions on how to automate or improve this process would be appreciated.