So bummed, I need help/advice :(

I failed my glucose test so now I have to take the 3 hour one this week. I failed by 8 points so the doctor said there's a chance I can pass the 3 hour one. Any suggestions on what I can do this week to help until my next test? I started by cutting out all sodas, fruits, juices, ice cream and candy already. If anyone can help me with advice I would greatly appreciate it!!