is there any way i can avoid drawing each and every frame and just set a starting and ending point for a drawing and let the body part just move by itself accordingly?
Hello,
If you use the Sceneplanning tools in the Camera view, you can set start and end frame keyframes to achieve this very easily.
Take a look at the chapter about animating puppets (chapter 11 in more recent versions). It should give you some info about creating and modifying keyframes in the Camera view.
Hope this helps,
Lindsay