I suggest you should go in for Electrical Stimulation to re-educate the muscle tone, strength and endurance of your wrist muscles and proper exercises for controlled action of the muscles involved and strengthening exercises to get back to pre-injury status.
A proper evaluation is a must. If it is too painful still, let your therapist decide if a splint will help you to avoid unnecessary movements and give your hand the necessary support required to relieve pain and further damage. This should help you.
Depending on your evaluation your therapist will be able to give you the exact time for recovery, but after 2 weeks you should start feeling the difference and should get some relief.