One useful treatment of Obstructive sleep Apnoea is use of air delivered at pressure in the nose at night. This is given by a machine called BiPAP machine. It costs about Rs 60,000 or thereabouts and is available in India. You need to use it at night and patients get good sleep. Before buying it the diagnosis has to be confirmed in a good neurology unit. Surgery for obesity is available at any good institute. I am sure AIIMS Delhi would have a such an arrangement or Batra Hospital. I would think the first option is better.