Mi band6 + Notify vibration not working properly in lucid dreams

When a phone without a bracelet is connected, the phone vibrates once (repeat 1 time). settings-sleep-lucid dreams-sound-preview,
And when I connect the bracelet (mi band6 + Notify), the bracelet vibrates 2 times with the same settings. I need the bracelet to vibrate 1 time and it is very short.