In fact, the fundamental problem is that this manual should not be written by professionals and unfamiliar with the requirements of the manual. You should search your patent carefully to see if there is any duplication, and if there is any duplication, modify it. Think simple, find an intermediary, write a patent, a few hundred dollars.
Besides, I don't know the type of patent you applied for. If it is practical, it can be simply modified. If it is an invention, it will be in trouble. You need something real.