I've had trouble with this too. Take a few weeks off until the pain/numbness recede. You may have a high elbow on your draw arm, which will place more pressure on your ring finger. Your arms should be pretty close to 3 and 9 o'clock. If that checks out, make sure you aren't torqing the string ( twisting from the wrist). If that checks out, try putting less pressure on the ring finger when you draw. Finally, try shooting for shorter periods. A two hour shooting session is fun, but probably not very productive and can lead to repeditive motion injuries. Just my $0.02.