India is playing both sides. They've been buying arms from Russia for decades and according to some sources spent 60 billion dollars doing so. Now they have a contract with the US for engine production so that most likely comes with a verbal agreement that they will not send weapons to Russia when the US is supplying Ukraine.

India doesn't act like it's against Russia or the US, but it wants to get the best deals from both sides.
Russia wanted to produce helicopters in India but that deal was cancelled most likely because of the engine deal with the US.
Chances of India going to war right now are very low, they just want to make money. It's the same fear mongering that people who say that Russia will attack NATO countries are doing.