Brenda: are you still latching bb on or express only?
If you pump only, 2 times per day is not enough. However, if you latch and pump, the 20ml could be excess.
If you like to express only, you can do it every 3 hours, each breast for 15-20min. Then in between the intervals, you may still have some time to plan other chores or even take power naps. With that, you should eventually see some improvements. Some nights, I tend to oversleep, therefore I only pump when I woke up in the day.
For me, even if my breast engorged, I still use hot towel to cover and massage the breasts JUST before pumping. Usually I manage to pump out more after that.
I took Mother's Milk Tea but not everyday, only when I remember. My supply has been stagnant at 100ml for awhile. I started pumping since the day I discharged. This week I am happy to see it has gone up to 120ml... Must emphasize again, everyone's body is different!
Pumping can be tiring too... Be it TBF or EBM, they all require lots of patience...