Glucose test help

Bri • rainbow baby boy 🌈 💙J.R.H 11/5/19 Sweet baby girl 💕J.M.H 7/18/22

Any advice on how not to get sick and throw up at the 1hr glucose test? I go tomorrow at 8am and my doctor told me I could only drink water beforehand. And my baby is so stubborn he hates when I wake up super early and not eat ASAP. So I’m scared I’m going to get in there and throw it all up and will have to keep retesting.