can we give left over formula milk after 1 or 2 hour..as I m using steel bottle with tight close cap..nd sometimes my baby don't empty whole bottle.so I kept that milk with close cap and giving after an hour

A. Hai good afternoon !! No formula milk to be fed within 15-20 minutes . Better mix small quantity instantly depending on baby demand or capability. You can set warm water readily in flask/thermal or else prepare in kettle ,mix formula powder with warm water instantly and feed baby. Do proper sterilization of feeding bottles , improper sterilization, cleaning or feeding leftover milk might cause motions, vomitings..