Resting from the aggravating cause is important. Education and awareness about what the symptoms and what positions or activities potentially cause carpal tunnel syndrome is important. Sim et al (2011).
A nighttime wrist splint is beneficial to eliminate wrist bending and therefore carpal tunnel symptoms. Muller et al (2004). Your physiotherapist may recommend a splint. A suitable carpal tunnel wrist splint can be found here: carpal tunnel brace
Physiotherapy is beneficial for most carpal tunnel sufferers especially in mild to moderate cases.
Carpal bone mobilisation and flexor retinaculum stretching to open the carpal tunnel. Tal-Akabi & Rushton (2000).
Nerve and tendon gliding exercises to ensure full unrestricted nerve motion is available. McKeon & Hsieh (2008).
Muscle and soft tissue extensibility. Moraska (2008).