Helping someone going through DPD

Hi I came across this form while searching for answers. My husband has been going through DPD for a few weeks now and the hardest part for me is not know how to help. I’m trying to understand what he is going through and what I should do to help. Right now if I touch him for longer then a brief moment it causes him to shake. I need to what I can do to help take his mind off of his DPD because right now when he is home all he can seem to do is lay on the bed. What advice can you guys give me to help not push him farther into himself? This is new to both of us and I don’t have any clue on how to help him.