I had exactly 2 months for finals from yesterday, how do i prepare? ( also im facing a weird crisis/ situation)

So basically, I've been going through some shit for the past few weeks, which made me stressed and overthink, and I lost all my friends who hv turned against me n they are spreading rumors n stuff. So I'm in a really bad situation mentally. I've been burnt out since January, and I am depressed. And I had my mocks last week, but I could only write five out of six subjects which im really proud of myself for finding the courage to actually go n write while being this unprepared. And from today, I have exactly 57 days till my finals. And I was wondering how I could prepare for them as my school has not covered all the content in some of the subjects. And I have to go to school for the next two months before the exam. So I don't really have that much time. I can't skip school because of the new content and absence because I have so much of it already. I did tell my school about my situation. They were really helpful. That's the only reason I could write the mocks because I thought I was gonna have to drop out. So I was wondering if anybody had any advice on how to prepare for the finals. And because of this weird situation, I'm kind of struggling. And if any of you guys have any specific questions, just DM me and ask because I'm looking for actual advice.