I know...I've heeded all the warnings and when starting a site, I do make a child-theme before doing anything else.
But I've been handed a job that is 3/4 complete, theme files and .css files have all been adjusted, and I'm petrified that my client's client will update one day and lose everything. I've made numerous other changes too (under a tight deadline) to get the site to the point of going live. (And, yes, I've warned my client, but he is unconcerned)
I have no idea which and how many files were worked on or added from the original before me, and do not have contact with the previous designer. This site is over 40 pages, with more than 10 plugins.
Is there a relatively easy (haha) way to make a child theme with the completed site without comparing each and every file for the differences? Or starting all over again? They've spent 8 months on this already!
Thank you in advance for any suggestions or direction.