question: Hi doctor, My baby is 3 months old and she is formula fed - Nan Pro 1. Her birth weight was 2.6 kg, which dropped down to 2.2 kg after 15 days of her birth. Her present weight is 4.6 kg, length is 56.5 cm and head circumference is 38.5 cm. She spits up around 6 to 7 times daily even after burping and keeping her in upright position for at least 20 minutes after each feed. She had an abdominal scan and the report was normal. She is too skinny. I am giving her Rantac 1.5 mL twice a day, Vitazyme drops once a day and Junior Lanzol 1/3 a day. I am extremely worried about her weight. Please advice.