I had 3 boys, then a 4th boy, then a girl!
In my experience, I did not properly sway with any of them BUT there were some differences in how my daughter was conceived compared to my boys. All of my boys were the result of very frequent BD (daily or more!). The month I conceived my daughter, I had been suffering from swine flu and was extremely ill. My husband and I only DTD 3 times that month and each encounter was roughly 10 days apart. None of the times were anywhere near ovulation. The closest was a few days after ovulation but we used a condom. I was 100% shocked when my BFP came back.
In the weeks leading up to the month we conceived, I had started 'thinking' about swaying and made teeny-tiny little changes to my diet to prepare. Like I stopped eating breakfast cereal (something I had eaten daily since childhood!), bananas, lemon water (something I had been starting my day with), etc... Just little changes. Plus I'd started using probiotic powder which totally dried me up (this wasn't used for swaying but something recommended to me for health reasons). So who knows if this all helped to change my body chemistry or not?!?
Also, I know its not right for a lot of people but all of the Chinese calendars I come across are right for all 5 of my kids if I use the age I gave birth to them (Chinese age) rather than the age I was at conception. It might be a fluke, but it's a very weird fluke!
I know exactly how you feel, I wasn't at all prepared to live my life without a daughter and would have kept going. To be honest, each little boy that came along only made me happy to know that I wasn't done yet!! I love having babies! I really really hope you have a daughter one day. All the best!!