One of the main things I would say is that nothing can really prepare you for the jump because a large web app made by many developers over years is a very different kettle of fish to your own small projects.
That said, making and deploying your own things start to finish gives you a great foundation to build from, your core skills will be fine, you will just need to learn how to orientate yourself in a big app and that’s a skill you learn through doing.
One of the main things I would say is that nothing can really prepare you for the jump because a large web app made by many developers over years is a very different kettle of fish to your own small projects.
That said, making and deploying your own things start to finish gives you a great foundation to build from, your core skills will be fine, you will just need to learn how to orientate yourself in a big app and that’s a skill you learn through doing.