In the Hanafi fiqh it would be permissible to recite it once but it is far better to recite it 3 times. Can i ask why you would only want to recite it once? Do you have an issue with Wasawasa/OCD in prayer where you feel you have to keep repeating recitations and actions as you doubt if you have done so correctly? If so please refer to the following thread which has many help, resources and advices for those of us who experience these issues: