GaiaM

Keith,
You will definitely get your feet mixed up for many years to come but your body WILL start to learn many of the movements and they will start to "flow" more with time.
I've been training for five years or so. Tonight Sensei called me up at the end of class so he could demonstrate the ukemi for the last technique we had practiced. He asked me to do the technique and all of a sudden I had absolutely no idea what i'd been doing for the last ten or fifteen minutes. Oh well!
Don't be hard on yourself and just try to get your body to do the basic movements. Eventually they'll become a part of you...
Best!
Gaia