Berat baby kurang

tiap kali check up mesti kne bebel dgn nurse sbb berat anak kurang, anak I makan semua selera, anak I bf. Berat die naik ckit jr. Last 2 days check up berat die 6.8kg,she 7 month 5 days today. Any suggestions or advice how can I increase her weight? #ingintahu #pleasehelp #bantusharing