I had it with both my last babies. I had a meeting with a diabetes educator at the hospital I was delivering at that wanted me to eat something like 250g of carbs a day and just add insulin as needed. I thought that was crazy and talked to my OB. She was find with me just staying low carb, about 50g give or take, a day and then just add insulin as i needed. My son I was able to keep my insulin at like 5 units every night, and with my daughter I was not as strict on carbs because I was still breastfeeding my son, so my insulin at night was up to 15 units by the end of the pregnancy.

Fasting numbers are virtually impossible to change, so dont stress over those. You can manage your numbers during the day easier with food choices and exercise, but fasting/overnight numbers arent affected by any of that.

HOWEVER, check with your doctor first. I never use the word keto to the doctor but use lower carb. They knew that if i was lower carb id have more ketones in my urine tests they take every time you have a doctor visit.

Newer studies out there have shown that gestational diabetes, especially uncontrolled, also predisposes your child to diabetes later in life. So controlling your blood sugar both before, during, and after pregnancy is super important for both you and your children.