I’m going into my junior year and my stutter has improved significantly since entering freshman year. My advice for you is to just go for it. You have to accept that you will block and stutter but that’s part of getting through it. What really helped me was truly understanding how quickly people forget things. You could trip in a super crowded hallway in school and drop everything. I guarantee you everyone will walk past you and maybe snicker or whatever but in 3 minutes they’ll all be focused on their new tasks. What seemed like a terribly embarrassing occurrence to you will have slipped their mind in mere moments.