Hello and please do not think you have failed, I was diagnosed type 2 im 2006 put into remission with diet and exercise loosing **** tom of weight etc
eventually it returned very dramatically, I did the metformin and eventually had to go on insulin now on 2 insulins Trujeo the long lasting and Trurapi the rapid acting for meals
It is daunting when you first start but in a few weeks you get used to it, you soon learn to control any problems (or I did)
This is not your fault it just happens talk to your diabetic nurse or Dr about this they are there for that reason
Please ask anything you like on here too, we cant do dosing etc but we can compare to our experiences
do not give up