Thank you for sharing your concern. People learn and assimilate information in different ways. For many people, reading aloud works well, while for others reading while walking is a common strategy. This is usually based on your learning style. You could practice reading under your breath and see if that helps. Additionally,
in order to determine if there is any underlying issue, one would need to look at when you started facing these challenges. It maybe beneficial to consult a clinical psychologist or educational psychologist if the problem persists.
Do you think this is ok?