I call bullshit on this kind of product! This just reminds me too much of the phytoestrogens that ruthless scammers sell on places like Amazon to trick uninformed trans girls into giving them money and believing they receive some medication, when it does nothing whatsoever for them.
The only “phytoestrogens” that actually do something are “phytoestrogens” sold by trusted homebrewers that are labeled that way to avoid seizure at the border.
In order to achieve medical effects, you need proper medication, in this case probably Prolactin. (I’d have to check to make sure, but there are plenty of reports of trans women who succesfully induced lactation medically to feed their kids and had no problem whatsoever after that point.)