Did you eat breakfast, or skip eating with the (quite logical) reasoning that you didn't want to exacerbate the problem by dumping even more sugar into your blood?
I've fought this paradox myself for some time, until the collective wisdom of TuD set me straight.
Paradoxically, after Dawn Phenomenon kicks in, your liver will continue to dump sugar into the bloodstream if you don't eat. This is because there are hormones the digestive system releases to signal the body (the liver being a prime target) that there is incoming fuel.
Absent these signals, the liver thinks it needs to supply the fuel needs of the body from it's stores. It will keep doing this until you eat something. As you feel hungrier, the liver is taking note too -- that you're fasting, but need energy now that your up and about -- so it keeps dumping.
Insulin doesn't help. All it does is cause the liver to cycle the blood glucose into glycogen complexes, which just get broken down again and released into the bloodstream.
That is, until the stomach and intestines indicated they are digesting, which will shut off this circular processing of sugar.
I'm 100% convinced of this now, after having seen dramatic effect from simply eating a Yoplait yesterday @6:30a, then this morning having bacon/eggs/toast around 8:00a, ignoring the BG rise to 140 shortly after waking up.
It worked, both days. I was able to get BG under control, back down under 100 within two hours of eating. I bolused correctly for the carbs in the food, as normal.
Now, prior to this, I'd be dumping tons more insulin all morning to correct the high -- usually around 160-170, and stubbornly flat -- to no avail.
If you are eating breakfast, then, well, never mind :-)