Treat the stroller like you’d handle a playful pup with a leash set it up so a lever must be held down to release the brake, just like a lawnmower’s safety catch. If you let go, the stroller won’t roll far, keeping things gentle and safe. Letting a child be the one in charge is a risky moe; they could unintentionally “fetch” the stroller and set it off before you’re ready, or in a pinch they might not have the strength to pull the mechanical brake hard enough. In every situation, it’s our job as the caring “parents” to stay in control of that stroller, not the little one. That’s really why we keep them right beside us.