Keto while pregnant

I was diagnosed for the second time with gestational diabetes. I’m doing pretty well at keeping my carbs in check and making sure I’m being more aware of what I’m consuming. My question is for you ladies have you heard of keto during pregnancy to be good or bad? Yes I will be asking my doctor when I see him next Monday. I’m just curious as to how it would work if at all. You still consume some amount of carbs but not bear as much and increase your fat intake.