Ok I am of two minds about answering this question. Firstly because I know you're already preggo B and G and I don't want to offer false hope/despair, so I am not a super big fan of picking over sways that are already done deals.
But, I do know there are others out there who are not pg yet and want an answer so I am going to answer it but I don't want to be fueling any obsessing over something that is outside of anyone's control.
To begin with, I DO think that switching from a boy-friendly lifestyle to 2 weeks of a girl-friendly one, CAN make a difference for swaying. Super reliable, maybe not, but it;s certainly better than doing nothing.
At the same time, if you've done a strong girl sway for several weeks and then do some more boy-friendly things, NO, you don't undo all that but is it ideal, NO, it's not. It doesn't erase everything, but it's not going to be as good as if you hadn't done that.
It is a radio dial, not a light switch.
http://genderdreaming.com/forum/gend...s-swaying.html