The nutrilite products are health and food supplements and they will not bring your sugar down.
You must consult your doctor fir the proper check up,investigations and treatment.
It is very important for you to control your sugar as you are proceeding ahead for conception.
If you are able to control your sugar levels by diet and exercises,then you will not be requiring any insulin
in your pregnancy
but if you require medications for controlling your sugar during pregnancy,then insulin is the right choice in pregnancy as oral diabetic drugs are avoided in pregnancy.