Has there been a decline in your performance?

It's not a good idea to simply try and hide your disability and hope it'll be ignored until you're forced to deal with it.

Is the RSD in your dominant hand?

What about using Voice Activated Software? That would seem like an appropriate accommodation. You do need to be careful to not damage your "good" hand by overuse, btw!

What caused the RSD initially? Was it a Work Injury?

CA, HI, NJ, NY, RI are the five states that offer state disability insurance. Your company might carry private temp disability insurance as part of your benefits as well.

If your doc reduces you to PT work, you can possibly collect Unemployment Insurance to makeup the difference in your lost wages.

The final option in applying for SSDI...