Ah yes. I have to say that were it not for a very good scanner with optical character recognition, I would not have entered so much info. Even with said scanner and OCR software, I should also mention that a twenty-four year career as a writer and editor helps to speed things along. I corrected all the typos in the original module, cleaned up some of the scruffier sentences, changed the names of the gods to fit my homebrew and re-set the text for clarity. I added a lot more NPCs and random encounters in the city (which is the PCs' base in my campaign). All of which took twice as much time as I would normally spend on preparation. However, a lot of the extra work I did will be reusable for much of the new campaign. I hope.
Preparing the follow-up adventure took much less time. I'm now spending as long on preparation as I used to, before I used software assistance (ie about eight hours) but I'm getting a lot more done in that time.