I have this same problem and the biggest thing I did that is helping me with this is to pick two cords, place your fingers in the cord position this lift slightly and press about 25 times, then switch your fingers to the next cord, press and release about 25 times, then switch back to the first cord and press and release 20 times. Do this until you reach one press on each cord. What this does is help to build muscle memory. It works. Do this as part of your warm up or just your begining exercises.
Dan