I hope you're having a good Saturday.
Gayle mentioned using R in your condo yesterday (Humulin R, or Regular insulin). That is a possibility, but it would require a lot more testing, especially at first. R is a powerful, fast acting insulin that is used as a supplement to Lantus/Levemir. When you first start using R, you need to be able to test every hour for the first 4-5 hours of the cycle until you figure out what your cat's onset, nadir, and duration are for R. Once you collect the data, then you can back off a little bit.
R is useful in some cases. Meadow is really flat with Lantus, so R might help bring her down to where she is flat in a lower range. If you want to give it a try, people can help you get started. It does require a commitment at first, as you are figuring out Meadow's response to R.