This is probably a very basic question, but I'm wondering how one goes about systematically figuring out the jaathi of a song. I don't exactly have formal training in Carnatic music. I am a Bharatanatyam dancer, so normally when learning a dance, I can figure out the jaathi from the basic steps that the dance is built up of. But, I don't know how to identify it by just listening to the music.
For example, I always get Thisra and Sankeerna jaathis messed up, which perhaps isn't surprising since 3*3 = 9? But I get confused about others as well.