The Thattadavu introduces concepts of rhythm to the beginner student through various patters of striking the floor with the foot. Do these in sequence to progressively build clarity in the articulation of the foot with the floor. Keep your hips stable and try not to move from side to side. It is better to stop when you begin to lose strength in your legs, take a break ,and start again rather than push through all the speeds while shifting your hip.
The 7th Thattadavu is the only one that shifts weight in during the Adavu to lift the opposite leg for a beat inbetween. .