I think the break I took gave me a chance to think about how to continue updates here. Based on all the helpful info given to me by the community, I think I figured out the best way to make longer posts without having the website auto-refresh and not save the progress.
The Auto-Refresh usually happens after a couple hours of writing. So, I think writing the chapters in a word document is the best way to avoid issues later. If you copy and paste the chapters to the forums, post the chapter, and then add the pictures while editing, it should allow you to get around the Auto-Refresh with minimal headaches. It will take time, but for now, this might be the best way to not lose progress on SimLit Chapters.