Day 3:
We've all heard the saying "practice makes perfect". The concept here is to practice or otherwise visualize the lucid task during WBTB. I've successfully used this many times. Give it a shot ...
Some of us tend to find themselves lucid in common places, like their house, office etc ... Build a goal around the assumption that you will find yourself lucid in that location. During WBTB, practice implementing the goal as if you were in a lucid dream.
For example, let's say I get lucid in my house quite often and desire to open a portal to my favorite beach. Print out a picture of the beach and retreive it during your WBTB session. During WBTB, go to the location where you plan to open the portal. Look at the picture and imagine the location in the picture being on the other side of the portal. Physically or at least mentally play out the scenario of succeeding in the task.
This role playing or practice session should be enough to lock the task into your memory and perhaps help with some dream incubation.