Fracture usually takes 6 to 8 weeks for healing. Since your fracture was already in healing phase during 2nd injury, it may take another 6 to 8 weeks for complete healing..
Next Steps
Since the fracture is not major, you need to continue using the support brace.. Also, take
calcium,
vitamin d supplements for enhanced healing.. Take analgesic for pain, high protein diet..
Health Tips
Avoid heavy work, also get one X ray of opposite wrist to see if there is any pathological weakness of bone since there has been recurring fracture..