Are there any airport/airline rules for traveling with formula in handcarry luggage?

According to the Civil Aviation Authority of Singapore (CAAS) FAQ: "Q22 Are there any exemptions to the new restrictions on carriage of LAGs (liquids, aerosols and gels) in hand-carry luggage? Exemptions will be made for medications, baby food and special dietary items in LAGs form. These items will be subjected to additional checks at the security screening point." Reckon you should bring in an appropriate amount of formula in an airtight container to meet your flight needs. You can ask the cabin crew for hot or warm water onboard :)

thanks