Mummy, memang ada kes yang babies yang mix feed boleh have less frequent bowel movements, especially bila dah masuk beberapa bulan, sebab breastmilk is so well absorbed by the body. Tapi since your little one tiba-tiba constipated masuk 5 bulan ni, it would be best to check with your paediatrician just to be sure, as they can advise properly based on your baby's weight and feeding pattern. Doktor boleh tengok whether it's something to monitor or if any changes are needed, better to ask than to worry alone, right?