Even just seeing another therapist to consult for a few sessions could be helpful. You could also look at it as wanting to find someone new and have them in place just in case your T suddenly says you have to reduce sessions now, so you'll have someone already determined to give you more support. Many on Psychology Today offer free 15-minute phone calls, so you could try checking a few out that way, or just try an initial session with one or two to see how it feels.

I don't think I realized how much I'd hit a dead end with ex-T until I started seeing Dr. T. And he seemed to have so many insights in early sessions--which is why I decided to keep seeing him instead of going back to ex-T. Dr. T has said that therapists only have so much in their bag of tricks, so it's common to have to switch to another one once you've sort of gone through all the tricks. I know it's hard to think of ever leaving this therapist, but you don't need to think of it as leaving, just trying out someone new. Like maybe see your regular T twice a week, then the new person once?

ETA: I also found consulting with another T, K, to be helpful a few times while working with Dr. T. She didn't seem like she'd be the right fit for me long-term, but she helped give me some validation when I really needed it and helped me in dealing with some of what happened with Dr. T at times. Even just seeing Dr. T's backup, R, a couple times when he was away gave me a new perspective on a couple things.