The plan has two aspects: 1) Prevent any legislative action to help Trump or to place him and his agenda in a good light; and 2) Provoke him into an action which could be portrayed as "impeachable". This is why Mueller is begging to be fired. This is why a resolution for his signature condemning the innocent victims of antifa violence for fighting back in Charlottesville was pushed by Ryan and McConnell. This is why there are always 3 GOP Senators to stop passage of a healthcare bill. This is why Corker, in his announcement hat he would not run in 2018 said, “I also believe the most important public service I have to offer our country could well occur over the next 15 months” (hint, hint).
The Democrats who want Trump impeached are not important. The Republicans who are coordinating the effort behind the scenes are a big problem.