I2S Sport DMA interleaved Rx

I'm using a BF592 and using DMA to handle the Rx side of my I2S communication the only problem is the DMA triggers on the Left and Right frame sync so that the data is interleaved in my buffer as L-R-L-R. I'm using a mono mode so I don't care about the right channel... is there a way to get this to not interleave the two frames as one? otherwise I have to double the size of the buffer to handle the data and I do not have enough room for this.