About connecting two Softbodies together

[monkeygame]

I want to bind the faces/vertices where two softbodies are next to each other. They have different physical characteristics, so they cannot be used as a mesh. In the running state, there is no need for real-time collision between the two softbodies.

I looked at the questions in the forum and found a way to connect two softbody points together by creating a rigid body. I tried it. It worked.
Is this the only way? If yes, I have to create a lot of rigid bodies to achieve what I want, is there a big performance problem?

Just starting to learn bullets, do you have any ideas or examples to refer to?