You don't need 45c tires to commute on, especially on pavement, it's far to wide of a tire.
I have 45c's that came on my new touring bike, I'm only going to do paved touring and maybe some gravel, and I've done that before on 32c tires; so as soon as tires come back in stock I'm putting on 38's. Also I commute to work on a bike with 25c tires, been doing that for a couple of years, prior to that I commuted on 23c tires for over 40 years.