Hypothyroid. Healthy as with medicine?

I am suffeing from hypothyroid since 2008. I am presently taking 75mcg thyronorm and my T3,T4, TSH levels are normal. However, if I change dosage levels fluctuate and I start feeling lethargy. Lot of hairfall and hair are dry and coarse. I am not obese with height of 5.3' I have 58kgs weight. My periods are normal for 3 days and cycle repeats in 28 days. Sometimes I feel leg pain which goes away with Vitamin D3 supplement. What should I do so that the requirement for allopathic medicine stops and I feel as energetic and healthy as with medicine? While taking homeopathic medicine do I need to stop the thyronorm completely or slowly the dose will be decreased. Looking forward for your response. Thanks and regards