Coolpot..
I assume that you are on the MDI regime?
The only thing that might be effect with eating your breakfast a lot earlier than normal, is your insulin ratio's.. It could be that the resistance normally associated with later in the morning, it could still be at a lower resistance..
So you need to think which way you want to play this, take a slightly reduced amount of insulin, or take the same amount? Either way, I would do some extra testing to ensure you either catch an high or a pending low very quickly, and plenty of hypo kit just in case.