Najis bayi memang senang bikin stress, kan! Tapi ada banyak sebab, bisa jadi formula memang tak sesuai, or bisa jadi normal lang depending on colour, consistency, and frequency. Kalau bayi okay lang, active, gain weight, most probably fine ja... tapi kalau ada signs macam severe constipation, diaper rash yang teruk, or bayi nampak uncomfortable, mungkin worth checking dengan pediatrician to confirm if formula memang the issue or something else. A few of us tried different brands and actually it made a difference for some babes, tapi kena pro guidance dulu so tak randomly switch. Best approach is observe bayi overall mood and growth, then discuss with doc, dia boleh advise if kena switch or not.