Formula feed quantity

Created by
Updated on Nov 28, 2016
My son is 9 months old and weighs 9. 5 kg. I give him formula feed(similac advance 2) once in the night before sleep and throughout the day I breastfeed him. As per the quantity mentioned in the cover of similac -180ml is one feed. For the past one week my lo demands 210ml. Is this OK??will his body find it difficult to digest the extra milk? his last solid feed is at 8 PM.