Have any of you honestly been continuously successful in inducing a W.I.L.D without the prerequisite of 5-6 hours sleep?

Or let me put that more broadly, have any of you been successful in knowing that you are falling asleep and then maintained this awareness through to the dreaming world without having any prior sleep?

I understand the mechanics that substantiate the needed 5-6 hours; however, I'm not entirely sure those reasons are convincing. Given some exceptions to this.