Princess- you can come over and borrow the sensor whenever you want. I will even teach you how to use it. Lol
Right now I am holding off until after shabbos at least. I find that my numbers are good even without the sensor. The prebolusing was the biggest and best change that really made a big difference. The higher the number the longer the wait.
Alls- I would think that you should wait. Or if you can now see how it is.