Welcome to MS.
I am glad you have found this place of healing and support.
I do not have any experience with DID, so I do not have any answers to your questions. But there are many here who do have that condition and perhaps they will be able to give you some answers.
The Sidran Institute
specializes in Dissociative Disorders and their site has a lot of information which you may find useful. You will also find support, reference materials and other information here
Take your time and look around. You do not want to trigger yourself by reading too many posts at one time.
At your own pace, read the boards and wander into chat. The lounge (chat) is open 24 hours a day though it isn't always populated.
We also have moderated chats called Healing Circles.
They meet on Sunday and Wednesday evenings at 9pm eastern time and one on Tuesday at 19:00 UTC (European and African time zone) which translates to 2 PM Eastern US time zone. The Healing Circle on Tuesdays is scheduled to resume in September.
Again, welcome to MS.