Title asks it all 
I’m sorry I can’t help you because I use Deild , the fastest way that actualy takes about 6 sec.
Same here. It’s hard say how long it takes but a successful DEILD could take about that time.
DEILD = Dream Exit Induced Lucid Dream. Also known as Chaining. It’s basically like WILD but you do it right after waking up from another dream (lucid or non-lucid). It can be very successful if you remember to not move as soon as you wake up.
interesting, I’ll look into it, though I would still appreciate an answer from someone ^^,
I tried WILD a couple of times before going to sleep, but it never worked. My only successful WILD was last week and it happened when I woke myself up every couple of minutes with a timer around 5am (without having to turn it off). Eventually I just lay still, remembered myself not to fall asleep again, relaxed. One minute later my body felt all weird for a couple of seconds and I felt myself spinning 90 degrees in bed and got out. No HI, no SP, no long wait, I just waited passively and it happened. So my advice, try it after a couple of hours of sleep, lay still and don’t make the mistake of waiting for HI or strange feelings, because it will just keep you aware of your body and keep you awake.
I use WILD after waking up during the night, but not when I first go to bed. I’ll wake up, write in my DJ, then go back to sleep with WILD.
It takes about five or six minutes for me. HI starts after about two minutes. My WILD attempts are not always successful, but when they are, this is usually the timing (at least it appears to be from my perspective).
I would assume that the time will vary from person to person depending on how long it usually takes you to go back to sleep.