Help with fasting numbers?


Question for the experienced mama's. I'll be 9 weeks tomorrow. Before getting pregnant I controlled diabetes with diet and exercise. No meds or anything. Since I've found out I'm expecting (December) my blood sugar has been a little high. My highest reading was 171. Doctor said to start metformin 500mg twice a day. Well that didn't change my numbers so she upped it to 1000mg twice a day. My after meal numbers are good all under 120 like it's supposed to. But I'm struggling with my fasting numbers 😭😭 morning readings are in the 120s my lowest fasting reading has been 119. Any tips to get my number down? I already do low carb because if I have more than like 23 my sugar goes too high. I haven't been able to see the dietitian yet. I have an appointment for my first ultrasound on Thursday I'm hoping she gives me tips because she hasn't been helpful so far. Sorry for the long post! This is my first baby and I'm so nervous!