Uploading larger sized modification files: how do I know it's working?

I'm trying to upload a new version of a mod I've made (first update of the mod I'll have brought to this site in over seven years lol) and when I use the "choose files" button to upload the mod itself (which is about 11.8 MB in size), like twenty minutes later it still has the choose files button followed by the file name.

I assume that the mod is in the process of uploading (since it won't let me save the page because the modification files are "null") but does anyone know if perhaps there's a way to still save everything else and then go live when it's done, or do I just have to wait for some sort of super exceptional internet connection or something?