Nursing school & breastfeeding

Hi ladies!!!

i have a dilemma on my hands!

I am going back to school March 19 & will be pumping while i’m at school for my son.

My question is for my breast feeding moms,

my son is 4 months old now & has taken bottles SO easily before, but since i’ve been feeding solely from the breast, now he hates bottles & just cries and cries while someone try’s to feed him. i’ve tried different bottles, different people (not me), frozen & fresh milk & nothing seems to be working.

Any advice would be appreciated!