Crippling anxiety over dissertation

My dissertation is due in 23 days and my anxiety is so crippling that i’ve done 0 analysis (it’s qualitative). I’ve basically written my lit review and my methods but that’s taken me so long that I haven’t even done the hardest part. Did anyone else experience this type of anxiety before their dissertation and how did you get over this? I know you can say just do it and it’ll go away lalala but I’m struggling so much any techniques for managing anxiety with this because I obviously want to graduate lol. I don’t want to make an appointment with the uni about it because I have before and it didn’t help.