Not sure you’ll find much experience with or knowledge of DID in this forum. This topic comes up from time to time without much traction, likely because there’s not as much overlap between the disorder and schizophrenia spectrum disorders as commonly believed. There are specialized DID communities and forums which may be better suited to help you. This diagnosis has more traction outside of the US so you may have to work to find support.
My understanding is it’s becoming less of a goal to integrate and suppress disassociation and more to build working “systems” to help navigate and cope with the disorder.
The following (likely outdated) thread points to some resources to explore: