Women will try to speak directly to whoever they speak to if that makes any sense.
They often sound more controlled.
They also tend to speak with more of their"head voice". Generally they talk faster as well.
Spending more time with your female friends will allow you to pick up their habits too.
Don't worry about your pitch as much as any other stuff.
Also if it's passing your worried about, then your appearance will matter more than your voice. (I thought I was trans once and looked up all this stuff feel free to ask me more.)