Traveling with a Toddler:
we just got back from a 9 day trip which included air travel, road travel and 3 cities :)
We got to Bangalore from Delhi by air, then road tripped to Ooty, from there to Coorg and then back to Bangalore, and back to Delhi by air.
I packed lots of cookies (Organic, Gerber), a few packaged purées from Ella's kitchen (those are organic purées, FYI), a few savory finger snacks from Gerber.
What doesn't work in my favour is that my baby isn't a very fruity baby. So I had to heavily rely on what I could carry.
Apart from that, carry a few toys (we didn't, but we were gifted with a few during the trip), download/ save YouTube videos that your baby likes to keep him distracted.
Massage or press your babies legs from time to time, just so his legs get proper circulation, let your baby run to his hearts content whenever you take a break.
Changing his diapers during the time you're breaking will give you some more time to stretch out your travel without having to worry your baby sitting in a dull diaper.