"But I want not Insulin.Is good..."
Works better for this, safer and makes you feel better.
"...Metformin 2 cpr a day of 500 mg in day Low-Carbo 1 in Breakfast(with
protein+Fat and zero Carbo) and 1 Meal Prebed(with zero carbo)..."
You will feel terrible for that day, until you reach ketosis. It will work though, but don't take the last one before bed.
"and in day- Carico Carbo(500 gr og carbo at High IG for 1 and 1/2 day) 3 cpr 15 minutes 1 prior of meal of 8AM +at 2 PM and 1 cpr at 22 PM?"
You can take the metformin after the meals. Also, make sure the 22.00 meal is a carb meal as well.