Earlier, I removed the setup shown in first post since the base is not strong which lead signal loses. I did the below setup after removing the first setup..
Today, I placed the dish like below. There was a mount for 90cm dish. I placed a PVC pipe inside the 90cm dish mount which is of size to hold small dish. Then I placed the mouse on it. It was very hard to put the dish inside since the outer width is larger by 1mm comparing actual dish mount. But managed to place the dish. Pics below.