Once you have trained the body mind connection you don't need to close your eyes, just take a couple of deep breath, defocus you eyes, and think 3 2 1. Remember to affirm your concentration and intention. You could be down to about 30 second after about 10 books.
Be sure to use the tangerine technique. That triggers the focus and concentration use it often. Not just for reading, also writing and meetings. Works well anytime you need to be there for something.
Alex
