Happens to me every morning if I don't dose for it, it's your friendly liver dumping glucose in your bloodstream to help get you going for the day. Known as 'Foot on the floor effect'.
I figured it doesn't matter if the glucose in my blood comes from the liver or from food, I need insulin to use that glucose. So I take a dose of quick acting before getting out of bed.
While this works well for me, it doesn't mean it would also work well for you. You're fairly new to this game and from what I see in your older posts on very low doses, so a single unit could send you too low!
I don't know how much time between getting up and starting breakfast but what about dosing for your breakfast a bit earlier? Many of us found we needed to pre-bolus on Novorapid.