C5 C6 compression must have reduced the intervertebral disc gap and its compressing nerves emanating from that region. Physiotherapy and Cervical collar support are unavoidable and will help. In Jaipur you will easily get Harsingar ( Night Jasmine) plant or get services of some gardener. Boil 10-15 leaves of Harsingar in 1 litre of water. When 25% remains, allow to cool (warm) and let your father drink it slowly. Do it at least twice. Some people boil 1-1.5 kg leaves in 5 litre water approx and keep bottled liquid for few days. But fresh is better. Liquid Maharasnadi kwath, cap Shigru, cap sunthi of Himalaya, Light massage of Mahavishgarbh oil + Mahanarayan oil in 1:1 ratio to strengthen neck muscles (no pressure please) and post massage hot fomentation of cervical spine will be very helpful. Cap Ashwagandha and Cap Meshashringi of Himalaya is useful in diabetes and high BP but your father s current med should not be stopped abruptly. Moreover these Ayurvedic Medicine are for prolonged use and do not interact with allopathy medicine. Once a week mild purgation with Tarunikusumakar chooran is essential. Here, in order of priority, medicines will act on resolving cervical issue more. No side effect at all. Legs may also be strengthened with massage of above combo of oil. For any further query you may contact me by direct question on HCM. Hope it helps you. My clinical experience spanning three decades will definitely have positive effect on your father. Pl avoid heavy diet.