Welcome to FDMB.
As noted, you'll get more responses by posting in the Welcome area, Feline Health, or under the specific insulin you are using.
That said, to give you feedback, we need to know more.
What insulin are you using, what dose, and how often?
What food are you feeding, how much, and how often?
What numbers are you seeing using what kind of meter or lab tests, taken at what times with regard to the shot(s)?