Suggest u prepare one meal of cereal instead of porridge as it might not be able to last that Long in the thermal flask.. do a taste test before u feed him .. I'd go easy with food since 1 y o still mainly need milk instead .. or u can give some bread/ banana or other easily available fruits too if he has no allergy
Fruits is a good option to take along. Just add milk or water and you are ready to go. Bring along some cereal and bread or plain biscuits
Taking dry food is a better option. Try cereals or even oats. They are easier to make. Just add water
I will take snacks and dry cereal. Or probably skip one solids this time!
you can consider bringing cereal, food pouches, bread, fruits.