I broke my right scaphoid (aka navicular) and it definitely took time to heal. You're lucky, yours is healed and now you just have to rehab it. After I got my cast off, it was two months until I rode, but I had a slow rehab b/c I was in a cast for 4+ months. I did stretching exercises every day to strengthen it and get more range of motion. I would assume you're in physical therapy, so maybe you can ask them about it.
My wrist is 100% back to normal, but it took over a year until I got the full range of motion. Don't let this discourage you. I rode with an EVS brace for over a year, and it worked great. I'm sure on your left wrist you wouldn't even notice it. Definitely go for the EVS!