Wa'alaikumassalam! Honestly la, among those three, Lactogen and Dupro are more commonly recommended untuk newborns sebab formulation dia lebih dekat dengan breastmilk, a few of my mum friends started with Lactogen and their babies did well. Dutch Lady pun okay but it's more of a follow-on milk, so it's better after 6 months. Dalam situasi MCO macam tu, I'd say go with Lactogen first since it's widely available and paediatricians usually okay dengan brand tu, but best check with your doctor which one suits your baby's digestion best sebab setiap baby lain-lain reaction nya.