I didn't pass for the first time (1 hour test). There are several tricks you
can do. First, don't eat anything after 8pm the day before, except water.
Second, being active on the morning before test, such as walking around for
10 to 30 minutes. Dont' worry, even you didn't pass it for 1 hour exam, you
will not be considered as diabetic. You will have a 3 hours test, or for
some doctors, like mine, he directly gave the last exam (not drinking the
sweet thing before test, just fasting before exam), and I pass it, so it is
ok.