Could Giving My Toddler About Half A Liter Of Nido Toddler Milk At Night Be Reducing Her Appetite For Solid Food During The Day?

Hi, My baby girl is 1 & half years old, mostly I give her 500-600ml todler powder nido per day at nignt but at day time she refuse taking enough amount of food even sometimes not at all. She is healthy and normal. May be does the nido looses her apities please i need you sugetion?