When you stop at words that catch your attention while SuperReading, begin Dipping. Regular-read the passage for the meaning of each sentence. It is okay to subvocalize if this is what you normally do while reading regular. Then, pick up and continue SuperReading and Dipping to the end of your book.
As you continue using PhotoReading, your reading skills become more efficent, and you will need to subvocalize less and less.