My grand daughter 5 & 1/2 months old has suddenly developed disinterest towards her bottled milk feeds. Her weight is 6.30 kgs. She is being given nestle man pro 1. Her regular intake was approx 130 to 140 ml 5 to 6 times a day, but she could take only 2 feeds of 130 ml each & 4 feeds of 80 ml in last 24 hours. Some sort of irritation is also a new kind of development, in her otherwise pleasant mood. She is not being breastfed. Her birth weight was 1.680 kgs only. Kindly suggest appropriate treatment/ directions.