how to stop schedule on cron using node.js

Question

Im using node-schedule and if user type !stopTime the cron will be stop... but in my codes, its not working well here's my code:

if (input.toLowerCase() == "!starttime") {
console.log("Time will be run for" + "every minutes!");
var taskTime = cron.schedule('*/1* * * *', () =>  {
    let time = new Date().toLocaleString('en-US', {timeZone: 'Asia/Manila'}).split(",");
    console.log("🕛Time Check: \n" + time[1] + "\n\Timezone: Asia/Manila");
  }, {
    scheduled: false
  });
  
  taskTime.start();

}

if (input.toLowerCase() == "!stoptime") { 
console.log("Time has been stopped successfully!");
var taskTime = cron.schedule('*/1 * * * *', () =>  {
    console.log("Time Check For Every Minutes Has Been Stop!");
  });
  
  taskTime.stop();

}