One very successful strategy is to leave the repetitions at 2 and do the dictation in the following way:
• Listen to the new phrase, sing or play it back.
• Now, listen again and watch the visual feedback at the same time.
• Finally, sing or play back the phrase again.
In other words, don’t look, then look, then don’t look. This takes a few minutes of practice. Once you can do your dictations perfectly, then stop looking all together and let your ear be your guide.