Potty training

My 3-year-old (she turns 3 in July) is starting PreK-3 in August. Her new school requires her to be potty trained by first day of school. She pees in the bathroom all day every day- but poop isn’t her jam. We’ve tried bribing, physically sitting her on the toilet- the tears that ensue and the frustration for us is starting to get to all of us (toddler included). I’ve tried to do a model and I keep getting myself in the questions over and over. I feel like I’m making my thoughts mean that she’s not going to start school.

C: School requires Bella to be potty trained by 8/26/21
T: This pooping drama is driving us all crazy
F: Frustrated
A: Keep trying to encourage potty for number 2
R: No improvement