It’s okay to think about college, as in, “one day I will go to college.” It’s not healthy for a 6th grader to think, “how can I get into Wash U many years from now.”
You will apply to college in 6 years time. Can you remember what you were like as a 5 or 6 year old? Because that’s how different you are going to be by the time you apply to college.
You seem like a smart kid. As such, be aware that it’s not good for your mental health to dwell on the distant concept of college. The #1 most important thing you should do right now is have a lot of fun being 11 or 12 years old.