Never did it long in a row, but I had a month here and there when I had two sessions per week. For me, I found that it mostly just fueled my obsessive thinking about therapy (why I wanted to go more often also) rather than helped. I never became dependent on the T per se, but got hooked on the mental stimulation of figuring things out and experimenting aspect pretty massively, and then used it as a distraction rather that constructive resource.

The cost was also deterrent for me relative to what therapy could provide (I live in a very expensive area) and I just didn't feel comfortable spending that amount of money on scheduled talking. I made better use of regular weekly (or even irregular, as needed) sessions plus unstructured emails (that were free and largely one-sided) between sessions.

I would say try for a bit if interested and see. It sounds like people's experiences vary quite a lot.