Its been a week I have got my jio fiber installed.
Initially 2-3 day the wifi kept on getting disconnected.tght It was the issue of fiber, but was the issue of JIO Router provided. I stopped and changed to my netgear router, form then its working awsome no issues till now and no disconenction.
Advice to others: Do not use the Jio wifi router which comes with the installation, instead use Netgear or any other router which has AP mode.