4 presentations in less than one month

4 presentations in less than one month I'm in year 10 in a German school. we will have to give a presentation in Geography (2 students together), Music (2 students together), Computer Science (3 students together, our teacher will count it as an exam) and one in English. English is my third language so oh well. but I'm so anxious especially because it's my "down" phase again. my last one was in mid December after the English oral exam but January and the beginning of February was kinda fun and good. what are your best solutions to stay calm? not only when you have to speak in public or on the phone, also just in general. I feel soo anxious all the time, it's the worst