Hey @neyawn!
I wrote my first mains in 2019 (2nd attempt). I could answer all questions and I'm optimistic about the results.
I joined MGP after failing in 2018 prelims. I have made my notes for almost all the topics. So, the thing about working on weak areas is less applicable. I mean, I need to read world history kind of things. But otherwise, I am sorted.
Now, I want to join SFG batch this December. But the test is this sunday and the program starts before the Mains result is announced. So, I'm uncertain about it. Should I join SFG now? or the later batch? I'm scared of Prelims (more than anything else in the world. Such uncertainty. )
About writing Mains test series, I think I can manage it post 2020 prelims. My writing skills are decent. Plus, I have written many MGP tests. So, any loopholes w.r.t Mains prep can be covered post- prelims.
What's the best use of the present time? I'm reading transcripts. I'm gradually planning to start preparing topics for interview i.e. current affairs preparation.
Please guide w.r.t SFG.