I was actually in a really similar position to you last year! I take physics, chemistry, and biology so i can't speak much on if its the same for maths, but the best way to have an 'academic comeback' is to blurt. It's really quick and easy so it would help with the burnout you're experiencing, and considering right now you have a month until exams, it's one of the most effective revision techniques for content based subjects like biology. For physics calculations I watched YouTube videos and found walk throughs of exam questions before trying past paper questions for myself. Realistically, with physics once it clicks and you understand how to answer the questions, the actual exams aren't going to deviate much from that style and the answers you need to give to get marks.
(Sorry I rushed this, if something doesn't make sense please tell me Ill try explain it as best I can! 😭 Hope this helps)