You should be drinking it all as it's pretty much what you're living off at the moment. I've noticed when I've missed out a pint I feel hungrier and am tempted to cheat. Try little and often or, if you're allowed coffee, use it to make lattes. You can also heat up some milk and add a chicken stock cube to make a poor man's cream of chicken - which every one I've told this to goes EWWW but it's pretty tasty really. I've also made iced coffees in my blender with some milk, chocolate crusha and a spoonful of instant coffee. Quite nice, that.
You definitely should be drinking it all plus lots of water too, I set my phone alarm for every 2 hours and had a glass each time which really worked for me and I always enjoyed my chicken OXO in hot milk, glad you tried it and liked it too Okie xxx