I went through DBT twice. The first time I just sort of got the cognitive elements of it---it didn't really get to my emotional level. Then I went through it again. Both times were in group therapy. Lots of folks also have an individual therapist at the same time who is aware of the DBT and tries to support it, from what I hear. I did have a T, but she didn't do DBT stuff with me....

I was being treated for borderline tendencies, which was its original purpose. But it's now used for bipolar and maybe other disorders, too.

I suggest that you talk to the therapist about it and hear what he/she says. Does the T see you're making any progress?