I've been working for almost a year as a sort of graphic designer that can develop, or a developer who knows photoshop. As a side project, my manager and I have been working on a web app, and I've been using the tools I know how to use to stand it up as best as I can. I've never worked in "serious development" before and don't have experience with what a reasonable request looks like. Over the last few weeks, we've gone from agreeing to a timeline for developing a prototype feature by feature over a number of weeks, to him calling changes out to me and expecting them to be pushed to the server instantly.
I don't feel experienced enough to push back on this, but he's now having conversations about rolling this out as an actual thing™ and adding in a bunch more features.
Is there a "correct way" to address these kinds of situations?