Yep!
I have exactly the same problem myself! I'm not even using the Lantus that is sat in my fridge, which is for various reasons. I only use 2u NovoRapid boluses. I'm told that when I come out of honeymoon, it will be easier to calculate. I tried to calculate it myself before, but a) I forget the ratio I cam up with, b) it's probably different in an adult than a child and c) it was pretty much impossible to do without a half unit pen!
Becky