Personally, I'd let sleeping dogs lie.
It's very possible that the tracking just didn't update and the buyer did receive the item. I don't do a lot of international selling but find that some countries are worse than others when it comes to delivery scans.
But if the buyer doesn't receive the item, you can be sure you'll hear so my suggestion would be to just sit tight.
Because my listings don't offer international shipping, buyers have to contact me if they want to buy and I have to add them to my exemption list. I sold an item on December 9 to a buyer in the Philippines. It wasn't until I shipped and checked tracking that it showed the estimated delivery date. On ebay, it showed as "Estimated delivery
Wednesday, Dec 25, 2019 - Monday, Feb 3, 2020"
On USPS, it shows Monday, Feb. 3 also. (On Dec. 12, it was in Jamaica, NY - international hub - and there are no updates since):
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I'm taking my own advice and won't do anything unless and until I hear from the buyer after Feb. 3. And how ebay would handle an INR after 2 months is anyone's guess!