Acquire sensor input from FPGA using multiple loops/

Hi,

I have a sbRIO and I am acquiring inputs from ultrasonic, temperature sensor and pressure sensor in a same while loop. When these inputs go to the RT for processing, only one sensor value changes i.e FPGA is only fetching input from one of these sensors. 
Should I use parallel loops i.e. acquire each input in a separate loop? If yes, should I be concerned about timings for each loop?

Regards.