Go first thing in the morning and just have a hard boiled egg or two with water—- or other protein, avoid carbs/fruit/juice. Make sure your phone or tablet is charged so you can be entertained during the hour you wait. Then get yourself a nice treat (I recommend something sugary from Starbucks) after and relax.
If you’re unsure what you can and can’t eat call your doctor I was told you can eat a sandwich or small breakfast no cereal nothing containing sugar that’s for the 1 hr test.Nothing at all for the 3 hr test you’re fasting.
Depending on which one you’re doing if it’s the 1 hr one don’t eat or drink anything sugary after 12,but you can eat something healthy lake a sandwich and drink water.If it’s the 3 hr one nothing to eat or drink basically you’re fasting until the test is over.