I think PN will also saturate coastal waters with kamikaze-capable USVs too, so even that asymmetrical scenario isn't easy-pickings for IN (and vice-versa).
It's also worth noting that geography works against India a little at sea (hence why the IN has to be a blue-water navy). Trade flows from the Arabian Sea and the Pacific, so the IN can't afford to escalate the risk at sea, as that could inadvertently disrupt trade to and from India (as merchants might worry about high-risk waters).
So, all in all, the IN probably doesn't want to escalate (which is how things seemed to have panned out in May 2025).