First of all without doctor advice do not skip or reduce medicine dose everything has its effect on your body. Consult the doctor who advised then discuss with him your concerns surely doctor will advice you correctly.
Next Steps
Secondly about the pain relief and relaxation part consult nearby physiotherapist and learn Jacobson relaxation therapy. And learn some home rehab to maintain strength and normal daily routine.
Health Tips
Can listen relaxation music from YouTube in background while working.
Learn breathing , meditation, mudra techniques