I could never express either.....it would simply leak out of my boobs and i would get so excited if i got 20 mls.....i used to freeze whatever i could....you will be suprised how much you will collect in say over a week.....i also found morning xpressing was the best. By 5pm in the arvo, i was over it, as was my supply i think.
Good luck, sounds like your doing great.