@TeslaJooni
Hi! I actually use Humalog to lower my dogs when needed. But my dog is a larger dog so it's easier. (Doberman) And I'm a type 1 so I am familiar with insulin obviously. You have to be very careful about using Humalog and most vets aren't familiar with it. I put a Libre on her so I could keep track of her blood sugars easier.
She has always been very erratic and getting some bad teeth pulled did help a lot. But she still has days where she goes high and we have her on Novolin N but can't increase the daily dose because it's not an everyday thing. So the Humalog is extremely useful. I keep the Libre on my dog with Skin Tac.
I know some prefer Novolin N to Vetsulin.
There is a site that has some people very helpful with suggestions on Facebook called Diabetic Dog Owners. The moderators can be a little conservative on treatments, but many people will pipe in with experience or ideas usually. There are some very knowledgeable people there. It's where I found out people were putting Libres on their dog.
She was diagnosed in 2018 and had DKA and was hospitalized for several days. I actually asked to take her home so I could deal with figuring out the amounts needed and knew I could use Humalog to bring down her levels faster.