Try it and see is the motto.
If you are accustomed to creating and using flash cards then go for it. I find it better when you bring PhotoReading into your current working study methods and allow your technique to change and drop what is unnecessary slowly. In the beginning that might mean you are doing more but like letting go of a security blanket it can be an anxiety creating situation that you don't need near exam times. Take the training wheels off the bike after learning to ride with the training wheels on.
Alex