thanx humera for u r kind rply.the chld has improved a lot in siiting.he sits well in stride sitting and cross leg sitting with weight on knees.also can sit independently able to correct in any direction.right now main pblm is flexed upper limbs specially left one which usuually stucks to chest with arm flexed internally rotated ,elbow and wrist flexed.i think he will come from supine to sit wich i s my nearrest goal. also will come prone on hands and also improve in independant sittind once he is able to entend elbow and take wight on it.i neeed u r valuable suggestions for that.