Hi again, Jeanene,
Stu was on PZI vet for 4+ years, so I know how you feel. lantus is a great insulin, but you don't have the flexibility you had with PZI. The 12-12 shooting schedule is important. Consistency has a lot to do with Lantus's success. I found that it's best to totally put out of your mind the procedures and routines you followed with PZI. Don't be discouraged if you don't see lower bg numbers right away. It takes a few days for the "shed" or "depot" to build up, and a lot of the insulin you shoot at first will be going into building this shed.
Welcome to LL!
Ella & Stu