Design prototyping or better to do everything on the fly

An entirely obvious thing, though it wasn’t so obvious to me at first, is this: I used to come up with design briefs for designers on the fly. But I eventually realized that this approach often leads to frequent redesigns. Now, I take a different approach: interface design planning. This involves mapping out the entire user interaction with the product from start to finish. I then align it with the technical capabilities and only after that hand it over to the designer.

At this stage, I also consider potential user issues and try to address them before they arise. While this approach is more expensive at the beginning, it saves significant time and resources later, as there’s no need for multiple redesigns.