I agree with Jim, you might need rapid acting for meals. I take Humalog it is a pretty good insulin. It starts to work within 15 minutes and peaks around 1 1/2-2 hours. It very closely matches the release of the sugar from your meal. Also don't beat yourself up, it is a life long learning process. Sometimes things that work one week might not the next and being a women also adds other variables. For example my sugar goes just crazy when I am about to start my period, so I have to changes doses because I seem to need more insulin during that week, then all the sudden a couple days after my sugar is perfect I can even get a way with a little chocolate!! Then when I was pregnant with my daughter it was weekly sometimes daily changes. You also have to account for how active or inactive you were, what you ate when you ate. You will figure out how certain foods affect you and how much insulin to take, for example pizza. I take a little more then half a dose of Insuiln when I get ready to eat pizza but then about 2 hours later I need 2/3 more units. Just work on the day to day and write everything down, that is very helpful to help you remember how a certain food affected your sugar and how much it affected it. Good luck!