I wasn’t allowed to drive for 8 months whilst mine failed to heal due to late diagnosis and me being an idiot. I tried that wrist brace but it’s not a patch on a cast in terms of reminding you NOT to use it.
If it doesn’t heal you get a bone graft and one of these:
Which reminds you it’s fitted every time you ride over cobbles, catch you wrist bone on an edge or clatter over roots.
I could cross my fingers ok when it was bust, even rode my bike(painfully) but opening jam jars was impossibly painful. As in eye wateringly, knees buckling, dissolving on the floor in agony painful.
Don’t mess with this bone.