Letters of rec?

Hey everyone. I am a junior in high school, and I have no idea how to send letters of rec. I have asked my counselor multiple times, but he keeps telling me to wait. The reason why I want to send them now is because I have taken classes in college and I asked the professors at the end of the semester because I did not want them to forget me. They have both agreed and told me to send them information.

Is there a way I can upload letters of rec directly to common app? Or does each prof send the letter on their own to the school? If I upload it now will it still be there when I go to apply this fall?

I’m sorry for all the questions, but I have nobody else to ask :(.

If you have a common app account, I think you should be able to assign recommenders to colleges on your list already. If that’s not possible, I would ask your profs to just send you a PDF via email, which you can then send to the admissions offices of schools you’ve applied to. I had to do this for a couple applications - I wanted to include a rec letter from my supervisor at work, but obviously there’s no real place for that in the common app. All of the schools I asked about this were happy to add it to my application. Hope this helps!