Drift off to sleep American British verb phrase
To slowly fall asleep
I have been working for 4 hours to complete all the tasks. Now I'm so drained that I drift off to sleep.
I intended to lie down to rest for several minutes but drifted off to sleep for so long.
Whenever my mom raises her mellifluous voice, our kid drifts off to sleep after that.
The verb "drift" should be conjugated according to its tense.