by disconnected from your thoughts do you mean its silent in your head, you cant hear any thoughts?

I have never had a situation where I experienced depersonalization as being disconnected from my thoughts..I have always welcomed when I could not hear my thoughts bouncing around my head real fast, have bipolar, seasonal depression and dissociative disorders and a past diagnosis of DID, all of which affected me through having too many thoughts going on in my head at a rate that was faster then I could keep up with. now when its silent in my head it feels so good, so normal because I know my meds are working and Im not in depression nor mania phases of my bipolar.

part of my bipolar is that I do sometimes have OCD features. one of which is obcessive thoughts.. going from obsessive thoughts to normal thought process is sometimes like what you described.... like suddenly not being connected/not hearing thoughts. maybe this is whats happening to you. with me if I just give it a bit of time Im able to hear my normal non obsessive thoughts again. sometimes its my medications too. Im glad you are working with your psychiatrist. they will be able to help you with this. mine are an amazing help when this happens to me.

here where you can read about the american version of depersonalization, maybe this will help you understand your problems better...

Depersonalization Disorder | BehaveNet

I say american version because other countries may have other diagnostic criteria for defining what depersonalization is.