You can explain what you need to your T and you can tell them what you didn't like about their style of working and why. If the T is receptive to your feedback than the problem might be solved to some extend.

But I don't see that as "helping" them become a better T. When you explain to them what you need and don't need, you give them an opportunity to learn something they didn't know before, but you can't actively "teach" a.k.a "help" them to become a better T. It's not your job as a client to spend energy on educating your T. I understand that clients want to do that so eventually they would benefit from a "better T". But this is a trap. To make someone behave you want them to behave with the hope that if your efforts are successful you would FINALLY benefit from the relationship is a trap where co-dependent people often fall. They try to "help" their partners be better in the hope that their own life would improve then. And they start doing the same with their therapists. It's not surprising then that they often get involved with people who exploit their "helping" nature. They tend to find significant others among those who would always give them hope that they (the partner) are "improving" when they are not and have never intended to. Those people might show "understanding" every once in a while that is just enough to keep the co-dependent person's hopes up, which keeps them stuck in the relationship. The same thing happens with therapists. Just like with partners, people with co-dependent tendencies tend to stick with therapists who manipulate them very successfully because this is the dynamic that is very familiar to them.

If you start "helping" your T to become a better T, you will fall into a classic co-dependent trap, which is hard to get out of.

Your therapy time and your energy is for doing work ON YOURSELF, for sorting out and working on your own personal issues. It is not the time and the energy to be wasted on teaching the T how to do their job. If they are not doing a good enough job with you by your estimation, address it in session, talk about it and see if the T understands you and if they are willing to change the way they work. If they either don't "get it" or don't want to change anything, waste no minute of your precious time and no bit of your life energy on someone who is not going to give you what you need. Move on to finding a better match for yourself or an entirely different healing approach. Don't ever work on any relationship harder than the other person does. Don't waste time, money and emotional energy on teaching anyone how to do their job. Every minute you invest into this unrewarding task you take away from your life and from other things you could be doing that would benefit you much more.