Glucose test question!

Im scheduled in 3 weeks to do my 1 hr glucose screening test. It's scheduled at 9 am and i was told to eat normally that morning and then drink the glucose drink 1 hour before my appt (and no food after i drink it). However, i don't normally eat breakfast that early anyways and so it would be abnormal for my body to have breakfast that early and i'm afraid my test results may be off. But after searching the internet for information on the 1 hour test it seems that some women who did not eat prior also failed and had to do the dreaded 3 hr test! Not sure what to do ladies! Should i do as i would normally and not eat breakfast that early or should i have ( a non-sugary, high protein/low carb) breakfast before?