You'll get there! As you are poking, it's stimulating the growth of new capillaries in your cat's ear. After a couple of weeks of consistent poking every day, you'll get blood every time. In the beginning you think it's something you're doing wrong - but it's not. Hang in there and this will resolve.
Catgirl - I agree with Wendy. It looks like 0.5u isn't quite enough and I think you have enough there to suggest going to 0.75u.
@Vtambo & Rex The most important number on Rex's spreadsheet is that 203 on your Alpha Trak. The higher numbers around it are bouncing numbers, because his body has gotten used to being in the high numbers. I'd stay the course with the 1.0u for now, and if you can get a test before bed that will really help you get a better picture of what's going on. With Lantus dosing, you make decisions on increasing/decreasing/holding the dose based upon answering the question "how low can this dose make my cat's blood sugar go?" Focus on that and getting the cat's blood sugar into normal range, and the high numbers will typical resolve on their own.