Craig Packer (former director of the Serengeti Lion Project) has been a big advocate of fencing in the national parks in Africa to prevent this sort of human-wildlife conflict.
It's very controversial, but similar principles would apply in India to minimize human-tiger conflict. At least some of the tiger reserves are already fenced in, but I don't believe all of them are.
Here's his original paper: https://sci-hub.se/https://doi.org/10.1111/ele.12091
And here is an interview with a more high-level explanation: https://www.minnpost.com/earth-journal/2013/04/minnesota-res...
It's very controversial, but similar principles would apply in India to minimize human-tiger conflict. At least some of the tiger reserves are already fenced in, but I don't believe all of them are.