Insulin is a hormone, not a medication you take. You don't always see incremental improvements with each insulin increase. Not until you hit the fitting dose do you see changes. Having said that, Blue is seeing some improvement, he's got more blue in the picture, and did see a green not long ago. I've seen lot of acros stuck in the same colour scheme for what seems like ages, until "boom" they get to that a dose than moves them.
Yes on the increase.