For me, therapy was the most useful when I did it "as needed" - going when I had specific things to discuss instead of regular sessions. Both of my Ts were very willing to work that way. But I think it depends on the client and their specific issues. The regular weekly sessions were kinda good to stick with a routine (I can have problems with routines in my everyday life) but, a lot of the times, I did not use them productively. So when it was as needed, usually I would make an appointment when I had something more concrete to focus on and I stuck with that topic instead of the wandering all over the map I often did in weekly therapy. It was always much more satisfying when I used therapy in a focused, more practical way.