Trying to conceive a baby girl, need advise, theories, anything.

Hi glow ladies over 30, I'm a 32 year old woman with two sons. I want 4 kids but my husband is compromising with 3. I am very desperate to have my last child be a girl. Naturally of course with no help from scientists. We are going to start in August to try to conceive baby girl. I ask, does anyone have their theories or do you have any advice to give for conceiving a baby girl?

Please let me say now that I do know God has a plan anf he gives us what we can handle. a healthy baby is most important to me. I know this because I had once miscarried at 10 and a half weeks so pleased don't judge me for wanting a baby girl.