Darnell, we have all been where you are in the beginning there is so much to learn and absorb and we all felt frustrated. What you need to remember is that the insulin is not a medicine, it is a hormone and does not have a predictable result each time. Getting a cat into regulation is a process; it does not happen immediately. Working with the doses of insulin in a systematic way following the protocol is best. Lantus likes consistence and changing up the doses from day to day interferes with getting the depot stable. Following the protocol for increases and decreases will help get Sprocket regulated faster.
About getting ketone test, have you considered buying a ketone meter? That is what I did as Bubba was throwing ketones too and I could never catch him in the litter box and when I did, he would stop peeing. ( he's very private) The meter I bought is called the Abbott Precision Xtra. It is only around 35 dollars on Amazon. The test strips are expensive though. I found the cheapest place to buy them was at a pharmacy in Cananda (Universal Pharamacy) It is so much more convenient to test with a blood sample, I would use the same sample for ketones and BG's by having both meters with the strips in ready to go. Also, when testing blood for ketones it is a more accurate reading as the ketones show up in the blood first and then eventually spill into the urine. That makes catching the ketones faster than if you test the urine.
Another thing that helped me was to read as many other post each day as you can as you can learn so much by others peoples questions and comments. And asking questions when I was confused. Every one here will help.