Block Module jQuery Slider for Homepage
From reading your question, I take it you have zero integration with Drupal. You simply hardcode your entire slideshow in a block.

What I would suggest is that you start with creating a new content type, and then apply either Field slideshow or Views slideshow onto it.


  Provides a Slideshow formatter for Image fields, using JQuery Cycle plugin.
  
  Compared to Views slideshows, building the slideshow from multiple nodes, this module builds it from a single node, with a multi-valued Image/Media/Field Collection field.





  Views Slideshow can be used to create a slideshow of any content (not just images) that can appear in a View. Powered by jQuery, it is heavily customizable: you may choose slideshow settings for each View you create.