Advice on maternity leave

Hi ladies! I'm currently 30 weeks pregnant, and I work at office job, 9 hours a day, from Monday thru Friday. I was aiming to work up until my due date but now I'm already starting to feel the wrath as I notice that my boss and co workers all realize that I'm going on maternity leave so they're using me to the highest benefit. (I work online in a high volume office 3-4 times a week) and it's becoming very stressful and overwhelming. My boss left the ball in my court whether how much time I wanted off, I will propose 6 weeks off and 4 weeks part time. Now I'm just wondering if I should take maternity leave a little earlier than I originally wanted to, at 36 weeks instead of my due date. What would you do?