They are building one to replace the INS Viraat. Also, they are going to acquire a Russian carrier-cruiser (Ex-Admiral Gorshkov). We could always offer one of our recently decommissioned conventional carriers, but that may be a bit pricey.
They don’t need a super sized carrier, they need specialized for service in the Indian ocean.
A buddy of mine was a MCPO on the USS America (the last non-nuke carrier?) He said it was more dangerous duty than his days as a helicopter door gunner in RVN. Said he was happy to hear that damn thing sank with nobody aboard!
If we want to help India, give them a new one!