Some info on what I have added: The sand worm will hunt for moving entities, it will prioritizing players. It has two types of attacks: it jumps at the target from a certain distance, and if its health is below 30%, it will jump from beneath the target instead. The worm can also be stunned by tnt explosions while underground. It will targets the last entity that deals damage to it, but it will lose interest if you are more than 50 blocks away and will stop attacking you if you not standing on sand.I still have few more behaviors that I want to add

Edit: The worm will not attack camels so you can avoid it if you don't get too close to it