What model truck?
I wear a similar size boot and haven't had any trouble with my AD trucks. I'd be inclined to keep driving and see how it goes, is it actually a problem or just need to practice a little more?
If a problem might be easier to move the brake pedal left (and clutch too of needed). At least on the AD trucks the pivot and hole in the floor would be less fun to move though I guess you could get inventive..