I dreaded school for the same reason. It was rough but ultimately we have to get through these situations, it’s just the nature of life. I freeze up saying my name as well and it’s absolutely the worst part. People don’t understand why I can’t say my name and some have even jokingly offered “what’s wrong did you forget your name?” So I feel your pain really, it sucks. My only advice would possibly be look your best because when you look good you feel good and that confidence radiates. May help fluency. Try magnesium supplements. I have been seeing people here post it a lot recently and I went out end bought same and I can see a difference in anxiety and fluency. it takes a few days/weeks to show its effect so by school starts maybe you’ll notice a difference