My Baby Is About To Turn 7Months In A Week

My baby is about to turn 7Months in a week and i have introduced solid foods when she turned 6months, she taste everything but doesn't eat at all post that. if i try to feed her anything except breastmilk she starts Crying and stop breathing.
I am so worried about her health and moreover, she is hardly sleeping 7-8hours throughout the day & night.