During this time I also used to study the "Competition Success Review", in which there was an column wherein we used to get the interviews of the persons who actually cleared all the levels to make up to the final post. After all this I had different impressions for preparations. But still & above all, you have to be consistent in what you are driven for. One of the IAS aspirants who cleared the interview said that she never had attended any coaching classes & still managed to clear the levels. So with this we can also opt to many such aspirant's interviews & guide themselves.
It's also advised by few to just carry on with some coaching classes so as to get an environment to proceed for our target.