This is why I like a front bag, I can continually feed myself. I've done bread, chocolate milk, hamburgers, french fries etc. I don't do gels very well.
Another thing I am adding to my kit is a small kitchen timer. I'll set it to go off every 15 minutes, and I'll reach down for my cytomax everytime it goes off, even if it is a sip. I rode 100k this weekend, and I didn't touch my water bottles until I reached the turn around point. Fine for 100k. Not fine for longer distances, imo.
I sweat A LOT, so I also need to watch my salt intake. I start with a pretty low sodium diet in the first place, but if you deplete your body of sodium you'll become nauseous and I also get light headed with a touch of the dizzies. and the more water you drink, the more you actually dehydrate yourself. This is why I like french fries from a fast food place. some do electrolyte thingies.