Analyze the following tweet to determine the level of fear expressed. The levels are: 0: no fear can be inferred, 1: low amount of fear can be inferred, 2: moderate amount of fear can be inferred, 3: high amount of fear can be inferred.
Tweet: Don't start anything prematurely, even when u do learn your lesson early enough, know when it's just ur fears or when u need to back it up