I have no idea how you can do this in you particular situation. I’d need lots of details about where you work, who you work for, and what you do. By the way, why 6 months? Would you consider 8 months a failure?

In most places the most important issue is how well your performance and behavior match the expectations of the person who rates you. The official company criteria generally are a secondary issue.

But, the question you should have asked is “How do I get better at what I do or become better able to do things I wish to do?” The answer to that is gain experience and understanding. Try to get assigned to work that takes you in the direction you wish to go. Don’t continue to do the same thing over and over. Study and experiment on your own. Anyone can buy a good book and read and that’s still a very effective way of learning new things. In software you can easily practice things you’d like to do, but aren’t at home on your own computer. Talk to others who do things you’d like to do. Software is very much a craft that is best learned from experienced practitioners. Participate in peer reviews so you can learn from other’s good ideas and mistakes. Have your own code reviewed to learn ways to make it better.

Your career and your life is you’re to manage. Work on it. Don’t assume others are looking out for you. Don’t assume the official rules can’t be broken. If your employer doesn’t offer you a desirable path, find another who does, but find the other before you quit and be sure what they claim to offer is real and not a sales pitch.