15 seconds is the norm for me, initially. However, I wake up at night to use the facilities and it takes me much longer to get back to sleep again. Sometimes up to 10 minutes. It's about the only thing I can do with any degree of expertise.
Out like a light in 15 seconds, and then off to la la land again within 10 mins. after middle-of-the-night weeweeville, I can only imagine...somehow, I’m older than you are...!!!!!!!