How do I keep up with constant product changes for customers?

You know the product well, but it keeps changing, so you are always a step behind what customers hit. That feeling of never quite catching up is exhausting, and it is not because you are slow. It is because the ground genuinely keeps moving under you. You will never know every change before a customer does. That race cannot be won. But you do not need to know everything. You need to know how the product tends to break and how to find an answer fast when something new appears. Being resourceful beats being fully current, because current never lasts. Instead of trying to memorize every update, build one reliable way to check what changed, a channel, a person, a release note you trust. When a customer hits something new, you will not panic. You will know exactly where to look. Trade the impossible goal of knowing it all for the reachable one of always being able to find out.