Is it your pinky and ring fingers that are tingly or is it your pointer and middle fingers?
If it's the pinky and forefinger than you are compressing the ulnar nerve as it's passing through the elbow region. Cubital tunnel syndrome or Guyon's Canal Syndrome. I had symptoms for cubital tunnel last year.
If it's the other two fingers than it's more likely carpal tunnel and wrist related.
How's your grip strength? Does it hurt to shake people's hands? If so, what fingers hurt?
You have to figure that part out or attempts to curb it won't be as successful.
For me it was multi-factored. I had a huge increase in phone time for work, started using the eliptical at the gym and got more time to knit. The doctor heard my symptoms of finger pain and hand tingling. He assumed it was carpal tunnel. The physical therapist changed it once she did her exam.
They make both elbow and wrist braces. I don't wear the braces when knitting since the velcro can catch the yarn. I use them at night when needed as that's another time I bend my elbows. They sell wrist braces at most any pharmacy. Elbow ones are harder to find. I just wear the wrist ones at night even though I have the elbow condition. It feels different enough to remind me to keep my arms straight when I am sleeping. I only wear them if I wake up and my arms/hands are in pain. Just wearing them the next night gets them back to normal.
Headset helps too if you have a lot of phone talk time for work. Basically, minimize the wrist or elbow activity for the stuff that is not essential (ie anything besides knitting!) Leaning a lot on your elbow can contribute to it too.
Hope this info helps.