If you find yourself tuning out in practice, bored, or have a feeling of dullness, you might try getting a little more specific with your attention. A bored mind is a mind not really paying attention.
You can enliven even your breath awareness by noticing the very beginning of each breath, noticing the middle of each breath, and noticing the very end of each breath. Feeling the subtleties of breathing- the way the body opens to receive the breath, the way the body softens around the letting go of the breath. Letting this help you to stay connected to the aliveness of the present moment.
I often work with this idea in my own practice, trying to sense into my experience with curiosity and openness. When you get right down into the micro moments deeply enough, the whole of existence can open up.
Take good care,
kim