I want to convert some of my crypto to USDT and keep it for a while in this bull run.
USDT is a stable coin and if you are converting your crypto to USDT then their will be no captial gain, which mean no tax. But for converting your crypto to USDT you will have to pay 1% TDS.
I think the best option for you to do is not convert your crypto to enjoy gains on your investment. If you have kept them on an exchange wallet then you should transfer them out to a personal wallet depending on the crypto you are holding. The bull runs should be going on till Trump takes his oath in January.