I agree with a previous answer that thinking only about the negative things is not going to help.
But here’s some of my advice: Don’t think about everything you have to do, all at once. That will easily overwhelm you. Instead, try figuring out what is the most important thing/what needs to be finished the soonest. And then start with that. Then do the next thing.
Perhaps you could tell your classmates to get it together, and then you could go to the library or a coffeshop or something, and study together?
Also, here’s some advice from my History and Form Group teacher (which he also got from some University):
Plan. Get yourself a calendar, either one on paper or on your phone. And then put in specific times that you will study and what you will study during that time. Also, don’t forget to put in free time. Because that is also important. And ”buffer time” in case something you have no control over were to happen.
He also said that when he gets home, he spends a few minutes just thinking about what he did that day, just trying to remember what we went through.
And he told us about an old IB student of his, who got a 45. He would plan his studying sessions, but he would also go out on the town and socialise. And when he was studying for History, he would make a roleplay with his friends. So creative ways to study are also good.
I hope this helps!