You can do that but continue to monitor your symptoms and progress. It is better to gradually reduce the other medicines so that your body gets time to adjust. Homeopathy can truly help but make sure your complaints are improving, if not or any other problem consult your doctor again.
Next Steps
In addition to homeopathic medicine, your Diet and lifestyle matters a lot to manage migraine and fibro. Consult online for a personalised diet and lifestyle management plan to help you deal with your condition.