Hey,
Try this points out. Like I said, there's no direct way, it's a long way to go my friend and a painful one too! It's not easy to do the difficult boring things everyday to reap benefits a year later maybe.
Also, why not try talking to a therapist now. Explain what you are going through, navigate through your difficulties. I understand you did it in 12th, but you are far more mature now than before, you would have better perspectives of your Procrastination nuances.
Also, Just to let you know, you do have to do the maximum work, they can only help you realise why you do it and possible ways to understand it better. What works for you is what you try and see!
Best of luck, don't worry too much. Trust me, I am in a terrible situation as well, but like Naruto, I ain't gonna lose my belief in myself. All I suggest is you don't do the same