I just wanted to chime in:
I've been doing this program for a month now and my breast are teeeeeender as hell and heavy too. I got definite growth and will be needing new bras soon but I'm holding off for now in anticipation of more growth.
I started the first 2 weeks taking 25g of grounded flax and 30g of toasted soyflour with full fat milk in the morning and evening. 1st, the flax with water then the soy with milk. It was yummy.
After those first 2 weeks I began noticing tenderness and a heaviness. I also got lazy and mixed them both in water and drank it that way, morning and evening.
I'e still gotten gradual growth but I do feel like it has slowed a little. It's been four weeks since I began.
I think after reading through this thread again, I will take them separate as was intended and have the soy with full fat milk.
For reference, I have been on a progesterone only BC pill, that's .35mg norethindrone a day for the last year. My diet consist of lots of eggs, whole milk, butter, red meat, fish, and water. I get about 4-5 hours of sleep every night and I started this journey off about 2 years ago as a C cup. Before this program I was a DDD. Currently... I haven't measured since before so I don't know.
So I'd recommend giving this program a try and I'd love to read more results of this particular regime.