You can wait max till Diwali, Nov 7. If the price hasn't gone down by then, then it will only go down near the end of their old stock, maybe before March-end.
Rs.2.90 lacs may become possible for the 65inch. Also keep an eye on Amz and FK during Diwali.
My problem is the major price difference between the 55in and 65in models. Twice the price for 10 inch difference. If you can live with it, then 55in for around Rs.1.60 lacs would be a good deal. Prices will be going down and you can upgrade to 65in in 2 years. By then the tech will also have improved and hopefully Sony will have dropped the idea of the slanting stand.