There are many people whom I am taking Mock Interviews, who only did SFG and cleared the exam. But then it was not their plan. They did it because of paucity of time.
I will recommend that you do Simulators - 8 FLTS along with it. The Simulators are patterned around different years - so some papers will have Polity more ( depening on the year they are mimicking ) , some papers will have CA more - depending on the year. That should be enough.
Also, whatever you have to do, you start now. Do not leave anything for the end. This is the end itself.
I am no knight. Do not call me Sir|Philosophy behind ForumIAS
i did it last year and got 110 marks, no other test series, I did it very diligently. I was RLG student though.
As far as I remember,@sjerngal ,did the same thing , along with a few FLTs .