I am the same - recently stopped night feeding and no leakage etc at all... (and i have always had v abundant supply)
I also used to express at work 1-2 times per day - now that J has cows milk at creche i have stopped this, maybe got full the first day or so but no issues since then...
I guess it is normal, he feeds quite abit when he is with me - a couple in the day and seems to get milk... so i guess my body/nature just has it sorted...