Infant formula

By “mix FM”, I hope you don’t mean that you are pouring the FM and BM together in one bottle? It is better to separate FM n BM. FM expires in 1 hour - strictly no keeping or reheating. BM is very resilient and has longer shelf life due to its antibacterial properties; some even keep it back in the fridge and reheat for next feed. If you mix both FM n BM in the same bottle, and baby does not finish at one go, you risk wasting the milk as it will follow the FM expiry timeline (1 hour) since the BM has been mixed inside. Many give NAN or NAN HA for breastfed baby.