Just joined

I'm autistic also SAD, mild OCD, depression and high anxiety. Have misophonia and alexithymia. My counsellor has advised me to join a forum. I've no family and no friends. Unemployed and dwp want me to have a work Capability assessment. It is making me feel I'll. I would like them to do a paper based one. Can I insist they do this? I shake uncontrollably in certain situations ones I would normally avoid. This would be a phone assessment but I shake on the phone when stressed and pressured. Anybody know if I can insist they do paper based assessment?