I got admission in an US university with full tuition waiver and full time teaching assistant-ship (78 percent, 31k out of 39k will be sponsored by the university). I faced my visa interview once this month which I messed up. I have stammering problem from my birth. But, I have almost recovered it. In normal situations (not in stressed situations), I can talk fluently. But, at times i get stuck in stressed situation. Same happened at the time of VISA interview. I just got stuck and couldn’t answer the questions properly. The VO then replied “You are not qualified for this kind of VISA”.
Now, I have taken another date next month. But, my chance of getting stuck is very high even at the next time I face interview. What should be my approach now for the interview to get success?