I cleared 3 interviews and got into a university for my masters

I cleared 3 interviews and got into a university for my masters This is not a rant. I am proud of myself but I am scared too. My high school and my undergraduate studies were good. I rarely had any embarrassing situations and even if I did I didn't care a lot because my friends didn't care too. But my stutter has 100% gotten worse during the pandemic and I lost the social skills I had in high school. I used to hang out with a lot of people but in college my comfort zone was only with my friends. Now that I have just over a month for my masters to begin I need to improve. I will be happy with any suggestions on how to : 1. The obvious. Improve on my stutter. Techniques etc 2. Immediately start conversations from day 1 because I usually take at least a couple of weeks to adjust to a new surrounding mainly because of the fear of being judged. I know I should avoid this but I need tips. 3. Any other suggestion will be very helpful. Thanks