India Post — delay in delivery of international speed post "re[protected]in"

Its almost 3 months that my international registered speed post with consignment no. Re[protected]in containing my m. Tech transcript form nit hamirpur himachal pradesh has not reached to toronto canada. I am not able to track the status of this post. It still displays that item bagged at delhi international mail centre on 6 dec 2019 under mail category air. Please provide me the current status of this post. How much more time it will take to reach its destination.