Sorry to hear about getting diagnosed with Carpal Tunnel Syndrome.
Massage can be a helpful complementary therapy for some people, and a
gentle Swedish massage, myofascial release, or even some trigger point therapy in the forearm can be beneficial.
While self-massage can offer some temporary relief and increase your awareness of muscle tension, it's better to see a professional massage therapist who has experience with repetitive strain injuries, like in your case.
They can apply techniques more effectively and safely than you might be able to on your own.
It's also a good idea to discuss any new therapies with your doctor or hand specialist to ensure it's appropriate for your specific condition.