My child can't start anything unless I prompt them.

Getting started on one's own (initiation) requires the ability to form an outlook and get moving, and quite a few children find it hard. It's not "being lazy"—it's often hard to grasp what to start and from where. Making tasks visible with pictures or a step chart, showing just the first step concretely ("socks first"), and signaling the start with a timer or cue all help them get moving. Keep the same flow and same cue each time, and recognize it right away when they start.