Got to agree with everyone else, jumping is not something you want to rush into! There's never a timeline with riding. You're ready to move up when you're ready to move up. It's all dependent on how much you ride, how athletic/strong you are, how quickly you pick it up, etc etc. My students aren't allowed to canter until they can maintain a proper position at all times AND do a posting trot without stirrups for at least one lap around the ring. They can jump when they can securely canter without stirrups AND steer at the same time (circling, cutting across, etc). Moving up when you aren't ready is flat out dangerous and irresponsible.