I have been breast pumping for several years, off and on.
I got discouraged as I wasn't getting any results, but in the last nine months a lot has happened. I obtained a new dual electric pump which is so quiet I can be sucked for hours at a time.
I have been pumping much more often since then, two or three sessions a day. I don't think that is really enough, but my boobs have exploded! I have gone from A to C cup bras in only a few months, and it's been expensive!
My nipples have become long, heavy and deep brown.
A bra is now essential for daytime wear and I feel very heavy in the evenings. I am pumping now to try and relieve the pressure, but I only seem to weep during the night. If only I could empty into the pump cups.
The pumping regime necessary to lactate is very demanding, often 5 or 6 sessions per day. I can't manage this, which is why I just get drips & leaks.
The next point is that you have to think as femme as possible. I pump more comfortably in heels, stockings and makeup (the bra is essential to hold my pumps).