breastfeeding advice

T
Hello all I have a 3 day old was in my mind was nursing really good. At the hospital they told me she was loosing weight and I needed to bottle supplement her until my milk comes in... well I have been doing that now she doesn't want to nurse. And I really want to nurse! Any advice on how to get her back on the nipple? Or should I pump to keep my supply in?.. first time mom really need help