You can start by looking on fanfiction websites like Archive of Our Own (AO3). It has a large collection of various fanfictions, and there's a good chance you'll find some 'Cheaper by the Dozen' ones there. Just use the search function and type in the title of the work.
One interesting 'Cheaper by the Dozen' fanfiction could be about the kids' adventures during a summer vacation. Maybe they go on a road trip and encounter all sorts of crazy situations, like getting lost in a small town and having to figure out how to get back on track. Another could be a story that focuses on the relationship between two of the siblings and how they support each other through school difficulties. There might also be a fanfiction where the family decides to start a new business together and all the chaos and fun that comes with it.
Sure was! Cheaper by the Dozen draws from the actual events and dynamics of the Gilbreth family. It presents a fictionalized but still true-to-life account that captures the essence of their experiences.
Well, it takes some inspiration from real family situations, but it's also fictionalized and embellished for entertainment purposes. So, it's a mix of real and made-up elements.
I'm not entirely sure what specific analysis you're looking for. But generally, in a 'cheaper by the dozen 2 charlie oc fanfic', it might explore the character of Charlie in new and different situations compared to the movie. It could focus on his relationships, his growth, or his role within the family dynamic.