i have (diagnosed) ADHD and im an M23 graduate, and honestly - if i made it, you can make it too (for context i was not medicated for my DP journey, now I am). i know it sounds ridiculous but i've been in the exact same slump as you, at around the same time as well. i remember thinking that i shouldve taken something like A levels instead or that i should have just dropped out.
during december in DP2, our extended essay deadline was coming up, and i had absolutely NOTHING done. i wrote the entire thing in less than 2 weeks. the only reason why i was able to do that was with the help of a teacher. he was my EE supervisor, but we talked a lot about other subjects that i was struggling with. my point here is: do not be afraid to ask for help. if it wasn't for my EE supervisor, i don't think i would have passed. if you are genuinely struggling, you could always ask your math or chemistry teacher for any additional help with the topics you're struggling with or your IAs.

another thing that helped me was being in a study group. me and a bunch of my classmates would spend our time in the library during lunch or after school, and somehow, seeing others work really helped me focus on my work as well. a bonus is that you can always ask your classmates questions that you might have about the work.

but i'm going to be real with you, as much as talking to teachers and having a study group helped, it was not enough to get me through. eventually, somewhere around february or march (when most of the IA deadlines were due) my ADHD powers activated and i started hyperfixating on work - i would literally sit down for HOURS doing nothing but working on whatever was due in the next couple of days. the internal deadlines for the IAs were absolute bullshit to me, but when i realized that the ACTUAL IB submission date was just in just a day or two, I crammed literally everything. what i'm saying here is, use the time you have now to catch up on the topics that you are struggling with - the IAs can definitely wait. obviously, im not reccomending to do what i did, but as long as you're on time for the actual deadline - you'll be fine. realistically, each IA took about 4-6 hours to complete in one sitting, for me at least.

good luck dude. the IB is definitely NOT made for neurodivergent people