Our 11 month old is on breastfeeding strike for 2 days already and we'll be taking a long flight tonight...hope that he will be good throughout the flight. Should I give him more baby food onboard?

Other than food you should probably pack more toys if he decides to stay up during the flight and need some form of entertainment. Whatever that can distract him would be useful. Remember his security blanket if he has one. Probably a pacifier just in case even though he doesn't use it? An iPad can also help save the day. Yes we are all aware of the implications, but when you're stuck on the plane with a crying baby, you will thank Steve Jobs for it.