India Post — My parcel is in transit from 2 months and has not delivered yet.

Incoming mail

Tracking number - rb[protected]sg
Source country singapore.
Destination-amritsar india.

My post has dispatched from singappre on 22 march towards india and as per status next office destination should be kolkatta airport sorting centre. Due to to locked down the process got delayed and inam worried about my parcel because slowly transportations are resuming and still no status of my parcel has been changed.
Kindly help me to find realtime status of my parcel.
Thanking you in advance.
Ravish mehra
Amritsar