How to change the text of the month toggle buttons in jquery ui datepicker?

Question

JavaScript

I use jquery ui datepicker calendar: https://codepen.io/maxbeat/pen/JjXMOrR
I need to add the names of the previous and next months to the month toggle buttons next to the arrows so that it looks like this:


Tell me, how can this be implemented? The documentation has nextText and prevText for adding text to these buttons, but how can I make sure that there is not just text, but the previous and next month?