Aussie Newbie TTC girl

Hi, I'm only new to gender Dreaming. I have 4 boys & desperately would love a baby girl. We always said 3-4 children & DH would have a vesectomy however I would love just 1 more baby so have convinced DH not to get a vesectomy for now. I'm turning 33 this year & DH is turning 35. DH is 1 of 4 boys & all 3 of his brothers have had 2 girls each, no boys.
I didn't know about swaying until I was already pregnant with our 4th boy so I have some done a little research into it since. I've already started getting my ph down. I'm currently breastfeeding & have just come off the mini pill.
Appreciate any advice, thanks in advance!