I think there is still a reasonable prospect of India acquiring Russian aircraft in the future, and any large order would be predicated on domestic industry involvement, which opens the door to customisation.
The next decade is going to be very challenging for India's inventory as the only aircraft that are definitely coming online are the 83 LCA Mk. 1As. Everything else: MRFA, LCA Mk. 2, AMCA, TEDBF is stuck either in Indian bureaucracy hell, or Indian development hell. And after this challenging decade, Su-30MKI, the backbone of the inventory, will start to retire. The plan is that LCA Mk. II and AMCA will deliver to relieve the downward trend in the inventory with Atmanirbhar Bharat solutions. In the real world, there is likely to space in the 2030s for further acquisition of foreign aircraft, potentially on a large scale, and Russia will be there to offer both mature Su-57 and Checkmate, while UK will be pushing Tempest. US will probably open F-35 to India at some point in this period also.