Has anyone else had higher blood sugar after switching from metformin to insulin?

I'm on day three of insulin and my numbers are way high even though I'm eating the same. With metformin, my numbers were high, hence the switch, but these numbers are ridiculous. I'm so glad I have an appointment tomorrow already because I'd have to make one anyway. My doctor said that we may need to make adjustments, but seeing multiple 200+ numbers is alarming.

Did anyone else have a similar experience? I'm just not sure what to expect.