Remember that when you ask your unconscious something, you are talking to yourself.

Your unconscious mind is a part of your own overall mind and psyche; it is not some separate entity that withholds and deals out information, wisdom, or performances at its whim, and it certainly isn't holding back some secret knowledge or abilities until you ask for them.

No, your unconscious is a part of your own mind, and it will work with you no matter what. It will not work on a question-&-answer or verbal basis, though. Think of it more as a CPU, and you need to program it properly in order to get the output you need. In other words, stick to the fundamentals, do your daytime work, and give your entire mind time to understand and properly adapt to lucid dreaming. There are no shortcuts! Until that programming is complete, anything you ask will go unanswered -- and you will be asking yourself!

That said, you certainly can ask your DC's questions, but try to remember that they cannot tell you something you do not already know, and that their answer will be gibberish until you feed their processors the information you want to hear.