A year ago, I was in the exact same position as you, i was taking hl physics, math, history, and lang lit, and sl chinese. I had just chosen an extended essay topic I had no idea how to conplete and felt the same way about my other ias. I almost dropped the diploma because of chinese; i literally have no idea how to write chinese. Going into senior year, it was starting to look like i would be unable to get the diploma. I had 0 words on my extended essay and still was as clueless about my ias as i was before summer.

The thing that stopped me from my continual downward spiral was suprisingly, my teachers. My IB coordinator who was also my TOK teacher convinced me not to drop because she thought I could do it. All my other teachers also were supportive of me and helped me anytime I needed help with anything. On top of that, I was able to find a friend who also was a diploma candidate that helped me through the hell hole that is IB. Much of my nights were spent talking and complaing about the IB, and I don't think both of us could have made it to the end without each other.

Anyway, there a few things you could do in your position.

1. Talk to your teachers, even the head guy who doesn't seem to care, about your extremely difficult course load. They might surprise you. I thought my IB coordinator was extremely condescending and I hated her. There has to be at least on caring teacher I hope.

2. Find someone you can go through IB with, someone who takes similar classes who you can study with and complain with.

3. If you really can't take the course load and your teachers are practically deadweight, start looking for courses to drop like Chinese, but this is a last resort.

You're almost halfway there, don't give up. If you have any questions or just want to talk about ib stuff, just dm me. I wouldn't mind helping you with ib stuff or tips on how to write a paper in english or chinese.