As someone who has experience with freestyle Tuishou,, sparring, getting hit with short-duration fajin, being knocked down with long-duration fajin sometimes. I caution the following as wishful thinking until one has become aware of their humility in wanting the .拳 quán before the Taolu...aka, c'mon you want to put the cart in front of the horse? Oh, you see, now you understand you merely wish to "illustrate" the necessity of having the cart behind the horse's behind... to the horse. That should probably work, given that the horse will hopefully, let's hope quickly, realize they can't move forward the other way.
Master Stephen Hwa talking about 推手 Tuīshǒu: "In old times teachers considered it to be extremely advanced. If you are talking about a Tai Chi family style's experience to do this. Regarding the 纏絲 chánsī exercises. I find that beginners take to it easier with the right explanation and the right methodology. For some of you that do the exercise, you should understand that it is a very important supplement to the form.
Now regarding 推手 Tuīshǒu Nowadays, almost 99% of Tuīshǒu taught has nothing to do with the Tai Chi form. The Tuīshǒu is completely divorced from the form. One sees a lot of people doing Tuīshǒu who have big muscles or they learn wrestling beforehand. They do not follow Tai Chi’s way of doing things.
Now, in the early days, the Tuīshǒu and the form were intimately related. In fact, the early masters did not let students do tuishou until they had quite a bit of experience with the form. Now in those same early days, the masters were very skimpy on their words, they did not really explain. So only the ones learning the form already can do the form.
Now, however, I’m thinking with a good explanation, one can bring in tuishou early with the caveat we can use that to illustrate why we do the form. I have explained this before. Now, this is very important, we can use the tuishou to teach people to be more careful in their study of the form. The tuishou can be used to emphasize what seems to be the not very important aspects of the form but in this regard, the tuishou can be very important. You see, I know that there are many who have the problem doing tuishou because you use it by itself."