re: How to manage fussy Baby?

I agree with reflux. Elevate her mattress on the head end and make a towel roll to use as a speed bump at her but. You can also twist a towel and put it between her legs, then safety pin the ends of the towel towards the head end of her bed so she doesn’t slide down. How often does she spit up? Is she breast or formula fed? So sorry, but something is not right, your pediatrician is wrong. Retired NICU nurse here.