Alabama Recommendations

[UApnm]

I will be participating in formal recruitment in just a few short weeks at the University of Alabama. I have spent the past few months securing recommendation letters; however, there are a few sororities for which I only have one rec rather than the recommended two.
I plan to spend more time looking for someone to write a rec to these certain sororitites, but if I am unable to, should I be worried about this or will one be enough?

Thanks in advance for your response, and Roll Tide!