To fall asleep slowly.
To lose concentration.
sweet dreams
Said to someone before they fall asleep, wishing them a good sleep.
drop off
To fall asleep.
nod out
To become drowsy and fall asleep; nod off.
cry oneself to sleep
To cry until or to fall asleep.
fall asleep
To be affected by paresthesia; to go numb.
nod off
To fall asleep, especially unintentionally.