Therapist says that my PTSD borders extremely close to a DID diagnosis. What does that even mean?

I've heard shit everywhere about DID, and I am / was completely convinced that the majority of sources claiming to have it are immature kids roleplaying mental illness OR young people with schizophrenia misdiagnosis as DID. Maybe I'm ignorant. I probably absolutely am, but I'm trying to understand it.

Then my therapist warily mentioned that I'm "a few points away" from a DID diagnosis. I was actually shocked, but some of it.. kind of makes sense..? But I thought that a DID diagnosis are not given out lightly and are supposedly pretty controversial in the first place?

Does anyone who legitimately has DID or knows someone who legitimately has DID, could you help me understand this?

I am unable to see my therapist currently due to insurance issues right now, so any insight would be invaluable. I'm struggling a lot right now to understand what that even means for me, my future, and how to deal with this.

Thank you.