Hi there - we've all been where you are right now - feeling this way. Hang in there. You're hearing is in February right? Did you get a lawyer? If so, your lawyer should be able to help with preparing you for the hearing and giving you support and some idea of how it will go. Did you order your case notes? This you should do right away to see what the concerns were. If you have a lawyer they would have ordered the notes, so ask for a copy. Your evidence should address all the concerns from case notes and any additional areas your lawyer may suggest.
Yes, it's an emotionally exhausting experience. You've gone through this much. Push forward a little more. Do the hearing. Get as prepared as you can. Get evidence together to address any concerns. Go over your notes and your history. Keep taking your steps forward.
It is not easy, and you've battled this far. Keep pushing forward.