Can I give my five-month-old baby formula when I am travelling?

I will encourage you to give him Breastmilk instead. It is recommended by World Health Organization to breadtfeed baby for at least 6 month. You can pump out milk and prepare sufficient frozen Breastmilk in freezer and get your caregiver to thaw and warm the milk for your baby when you are travelling. Remember to bring a pump, bottle and milk bag during your trip to pump milk every 3-5 hours to maintain your supply. You can keep those milk in fridge and bring them back with cooler bag and cold packs. Remember to check with the airport & airline on whether you are allowed to onboard with breastmilk.