That's why it's said
jaldi ka kaam shaitan ka hota hai which means work done in hurry result like this. You should have ported 1 sim from Airtel postpaid to Vi prepaid and tested first.
Although now you have Vi postpaid with unlimited calling, activate call forwarding to Jio number. If remaining 3 Vi Postpaid number are with family members get them Jio sim as per requirement and activate call forwarding for them too.
So, in case of any situation they receive call on Vi number they can attend it properly. You can experiment first with your Vi
Jio numbers.