Yes, WBTB is a very good method to help LDing. You activate your consciousness, what do you expect... It works wonders with MILD, WILD and other techniques. It's also good for dream recall. For me, getting up for 1-2 minutes is enough to have my mind a bit active, then going back and trying WILD or just focusing on LDs. If you do it almost every night you'll get a nice increase in LD (and no sleep loss but you need to get to bed early to make up for the breaks).
The early morning is perfect for WILDs (after 4-6 hours of sleep). You should be very tired but at the same time have an alert and ready mind. If you find this combination for you, it should be only a matter of practice until you successfully fall asleep consciously.