Unfortunately it's difficult to rush these things - just go through exercises that work your wrist through its range of motion: wrist flexions, extensions, rotations etc. with a progressive amount of resistance.
What the doctors wont tell you is that your wrist will probably never heal completely - I broke my thumb badly a few years ago and it
still hurts sometimes.
But it's still early days, I wouldn't worry too much. Realistically you can expect to it to be functioning as normal or as close to normal as makes no difference in about another 3-4 months.