Recently I dropped the mid-afternoon BF and have started expressing and freezing it as I am going to have to go away with work soon. My DTs are ill at the moment with nasty colds and I was wondering whether it would be a good idea to re-introduce it for a few days to give them an added injection of immunity. Do you think it will confuse them? They didn't seem to mind missing it to begin with so I'm hoping that they might let go of it again as easily....