I was diagnosed 11 months ago and I started by keeping under 100g per day, the weight fell off easily and my blood sugars dropped steadily. After 6 weeks my blood sugars plateaued so I reduced to between 50 - 70g per day. The weight continued to come off and blood sugars dropped. I have naturally dropped a little further over the last 3 months and now rarely go over 60g per day. My HbA1cs have been non diabetic since Sept and my weight continues to fall but at a much slower rate.
I preferred gradually reducing carbs as I wanted to avoid carb flu, not real flu but a similar feeling as your body objects to a big drop in carbs.