Waitressing while pregnant

Emily • 24, first time mommy after TTC for three years with pcos! Nora💗
I waitress part-time three days a week to supplement my husbands income. I was just wondering if any of you ladies serve as well? If so, when do you plan on going on maternity leave? I'm 31 weeks and want to try to tough if out until I'm 35 weeks, but it's getting hard!!! I'm able to sit down pretty much whenever I'd like and working during the day it's much slower paced. I'm just not sure when enough is enough!